MASSACHUSETTS
For 1999 and after, click on the date for the corresponding eight-hour average peak ozone map for that day.
In October 2015, EPA revised the 8-hour ozone standard and changed the Air Quality Index (AQI) to align with this new standard. Maps for days in 2007 and earlier are based on the 1997 8-hour ozone standard (0.08 ppm). Maps for 2008 through 2015 are based on the 2008 ozone standard (0.075 ppm). Maps for 2016 through 2022 are based on the 2015 ozone standard (0.070 ppm). Click Here for a table showing the revised AQI breakpoints for the 1997, 2008, and 2015 ozone standards.
Adams | Agawam | Amherst | Blue Hill | Boston | Brockton | Chelsea | Chelmsford | Chicopee | Easton | North Easton | Fairhaven | Fall River | Greenfield |Haverhill | Lawrence | Lynn | Martha's Vineyard | Newbury | Newburyport | Pittsfield | Scituate | Stow | Sudbury | Truro | Uxbridge | Waltham | Ware | Worcester
Adams
Operating from 1994 to 2014 |
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---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 2 | 9 | 0.079 | May 31 | 0.078 | Aug 4 | 0.074 | May 30 | 0.074 | Aug 9 |
1995 | 2 | 4 | 0.083 | June 18 | 0.077 | Aug 1 | 0.073 | June 19 | 0.072 | June 29 |
1996 | 6 | 7 | 0.096 | June 7 | 0.085 | Aug 7 | 0.084 | June 2 | 0.081 | June 1 |
1997* | 5 | 12 | 0.090 | June 30 | 0.084 | July 13 | 0.082 | July 14 | 0.078 | June 12 |
1998* | 1 | 3 | 0.076 | May 29 | 0.074 | July 14 | 0.073 | Sept 15 | 0.069 | Sept 14 |
1999 | 3 | 7 | 0.086 | May 31 | 0.083 | June 1 | 0.080 | July 16 | 0.075 | June 24 |
2000* | 2 | 4 | 0.090 | June 10 | 0.078 | June 11 | 0.075 | May 6 | 0.072 | June 9 |
2001 | 26 | 28 | 0.108 | June 19 | 0.099 | June 20 | 0.093 | May 4 | 0.092 | June 14 |
2002 | 10 | 17 | 0.101 | Aug 14 | 0.096 | Aug 13 | 0.091 | Aug 12 | 0.086 | Aug 11 |
2003 | 8 | 11 | 0.104 | June 26 | 0.100 | June 25 | 0.083 | June 27 | 0.083 | July 2 |
2004 | 2 | 4 | 0.086 | July 22 | 0.081 | June 24 | 0.075 | Aug 10 | 0.071 | July 1 |
2005 | 11 | 18 | 0.091 | June 9 | 0.089 | Sept 13 | 0.087 | June 24 | 0.087 | June 25 |
2006 | 4 | 7 | 0.082 | June 18 | 0.079 | June 19 | 0.077 | Aug 14 | 0.076 | June 17 |
2007 | 11 | 20 | 0.093 | June 8 | 0.086 | May 25 | 0.082 | May 24 | 0.080 | Sept 7 |
2008 | 2 | 4 | 0.100 | June 13 | 0.092 | June 14 | 0.075 | July 12 | 0.072 | May 26 |
2009 | 2 | 3 | 0.083 | May 22 | 0.079 | May 21 | 0.075 | May 20 | 0.066 | June 6 |
2010 | 1 | 4 | 0.080 | Sep 2 | 0.074 | July 4 | 0.074 | Sep 1 | 0.073 | July 5 |
2011 | 1 | 2 | 0.088 | July 20 | 0.071 | July 21 | 0.068 | July 17 | 0.067 | June 8 |
2012 | 0 | 5 | 0.074 | June 21 | 0.074 | Aug 31 | 0.073 | April 16 | 0.073 | July 12 |
2013 | 1 | 2 | 0.076 | May 31 | 0.074 | June 1 | 0.067 | Aug 20 | 0.066 | Aug 21 |
2014 | 0 | 0 | 0.066 | April 13 | 0.066 | May 12 | 0.065 | May 26 | 0.063 | April 22 |
*Site did not meet 75% minimum data completeness requirement. |
Agawam
Operating from 1982 to 2002 |
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---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 14 | 20 | 0.103 | July 20 | 0.100 | Aug 4 | 0.090 | Aug 25 | 0.089 | Aug 1 |
1995 | 14 | 22 | 0.109 | July 13 | 0.096 | June 30 | 0.096 | Sept 7 | 0.093 | July 4 |
1996 | 5 | 11 | 0.087 | Aug 8 | 0.085 | July 8 | 0.084 | Aug 7 | 0.082 | July 12 |
1997 | 11 | 11 | 0.097 | July 1 | 0.094 | Aug 11 | 0.093 | June 21 | 0.092 | July 25 |
1998 | 5 | 10 | 0.093 | Aug 24 | 0.082 | July 14 | 0.081 | July 16 | 0.080 | July 15 |
1999 | 8 | 12 | 0.088 | June 1 | 0.084 | May 31 | 0.083 | July 30 | 0.081 | Aug 17 |
2000 | 2 | 5 | 0.089 | June 10 | 0.080 | June 16 | 0.073 | June 26 | 0.071 | June 2 |
2001 | 7 | 14 | 0.091 | June 19 | 0.086 | July 23 | 0.082 | July 22 | 0.081 | June 20 |
2002 | 13 | 26 | 0.118 | Aug 14 | 0.112 | Aug 13 | 0.101 | Aug 12 | 0.097 | July 22 |
Amherst
Operating from 1988 to 2014 |
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---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 12 | 20 | 0.097 | July 9 | 0.097 | Aug 4 | 0.096 | June 17 | 0.091 | July 20 |
1995 | 7 | 15 | 0.089 | Aug 31 | 0.085 | Sept 7 | 0.085 | June 30 | 0.084 | July 28 |
1996 | 7 | 9 | 0.087 | July 12 | 0.086 | Aug 8 | 0.085 | July 8 | 0.081 | Aug 7 |
1997 | 7 | 9 | 0.098 | July 1 | 0.092 | Aug 11 | 0.083 | July 27 | 0.082 | Aug 10 |
1998 | 8 | 11 | 0.100 | July 14 | 0.096 | July 16 | 0.083 | July 27 | 0.081 | July 28 |
1999 | 10 | 16 | 0.098 | July 31 | 0.089 | June 1 | 0.085 | June 27 | 0.084 | May 31 |
2000 | 2 | 2 | 0.086 | June 10 | 0.082 | June 16 | 0.066 | June 25 | 0.065 | June 1 |
2001 | 10 | 14 | 0.102 | June 19 | 0.086 | June 20 | 0.085 | June 13 | 0.084 | May 4 |
2002 | 8 | 9 | 0.107 | Aug 14 | 0.096 | Aug 13 | 0.091 | July 22 | 0.086 | June 21 |
2003 | 0 | 0 | 0.069 | June 29 | 0.066 | April 16 | 0.061 | June 27 | 0.061 | July 24 |
2004 | 3 | 3 | 0.088 | July 22 | 0.079 | Aug 10 | 0.076 | June 24 | 0.062 | June 8 |
2005 | 5 | 9 | 0.092 | June 9 | 0.079 | June 25 | 0.078 | April 20 | 0.078 | June 8 |
2006 | 2 | 4 | 0.102 | June 19 | 0.078 | July 27 | 0.075 | July 10 | 0.074 | Aug 14 |
2007 | 9 | 14 | 0.094 | July 10 | 0.091 | July 9 | 0.087 | Aug 30 | 0.080 | June 19 |
2008 | 1 | 4 | 0.078 | April 19 | 0.075 | June 10 | 0.074 | April 18 | 0.073 | May 30 |
2009 | 1 | 3 | 0.076 | April 27 | 0.073 | Aug 20 | 0.071 | May 22 | 0.070 | July 16 |
2010 | 1 | 2 | 0.077 | Sep 2 | 0.074 | May 1 | 0.070 | May 2 | 0.069 | Sep 7 |
2011 | 0 | 1 | 0.074 | July 21 | 0.068 | June 28 | 0.066 | July 20 | 0.061 | June 11 |
2012 | 1 | 2 | 0.082 | July 13 | 0.073 | May 29 | 0.068 | May 13 | 0.068 | July 12 |
2013 | 0 | 0 | 0.067 | April 28 | 0.063 | June 1 | 0.060 | June 22 | 0.059 | April 30 |
2014* | 0 | 0 | 0.060 | May 12 | 0.056 | April 13 | 0.053 | May 11 | 0.052 | April 12 |
*Site did not meet 75% minimum data completeness requirement. |
Blue Hill
Operating from 2002 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2002 | 32 | 42 | 0.134 | Aug 13 | 0.116 | Aug 12 | 0.112 | Aug 14 | 0.107 | Sept 9 |
2003 | 7 | 11 | 0.109 | June 27 | 0.091 | June 26 | 0.090 | June 25 | 0.089 | Aug 22 |
2004 | 6 | 10 | 0.100 | June 8 | 0.095 | June 17 | 0.084 | July 30 | 0.078 | June 9 |
2005 | 15 | 22 | 0.103 | June 25 | 0.091 | June 24 | 0.090 | April 20 | 0.089 | June 26 |
2006 | 7 | 11 | 0.087 | July 18 | 0.086 | June 18 | 0.084 | June 19 | 0.083 | July 2 |
2007 | 14 | 21 | 0.095 | July 26 | 0.095 | Aug 3 | 0.094 | May 25 | 0.088 | Aug 30 |
2008 | 4 | 9 | 0.082 | June 10 | 0.078 | June 14 | 0.077 | July 19 | 0.076 | April 23 |
2009 | 3 | 4 | 0.081 | April 28 | 0.081 | May 22 | 0.076 | Aug 18 | 0.071 | May 21 |
2010 | 2 | 8 | 0.083 | July 5 | 0.081 | Sep 2 | 0.075 | July 21 | 0.073 | Sep 1 |
2011 | 1 | 5 | 0.076 | July 21 | 0.075 | June 8 | 0.073 | July 6 | 0.073 | July 11 |
2012 | 2 | 6 | 0.080 | July 17 | 0.078 | June 29 | 0.075 | Aug 31 | 0.074 | Aug 9 |
2013 | 0 | 4 | 0.075 | July 19 | 0.074 | May 31 | 0.072 | Sept 11 | 0.071 | June 25 |
2014 | 0 | 2 | 0.072 | July 22 | 0.071 | May 12 | 0.068 | June 2 | 0.067 | June 3 |
2015 | 1 | 2 | 0.088 | Sept 18 | 0.072 | Sept 8 | 0.068 | Sept 17 | 0.067 | July 1 |
2016 | 1 | 3 | 0.083 | July 22 | 0.073 | May 25 | 0.071 | May 26 | 0.070 | July 18 |
2017 | 3 | 4 | 0.084 | May 18 | 0.083 | May 17 | 0.076 | June 12 | 0.075 | June 11 |
2018 | 0 | 2 | 0.075 | July 10 | 0.072 | May 2 | 0.069 | May 25 | 0.069 | Aug 28 |
2019 | 0 | 2 | 0.070 | Aug 30 | 0.062 | July 30 | 0.059 | July 19 | 0.058 | July 31 |
2020 | 0 | 0 | 0.057 | Aug 11 | 0.056 | Aug 21 | 0.054 | July 27 | 0.053 | Aug 10 |
2021 | 0 | 0 | 0.069 | June 5 | 0.059 | June 6 | 0.056 | June 18 | 0.056 | Aug 26 |
2022 | 0 | 1 | 0.0719 | July 24 | 0.068 | Aug 20 | 0.067 | July 1 | 0.067 | Aug 4 |
Boston
Operating at Long Island from 1999 to 2014, at Roxbury from 2015 to present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1999 | 10 | 15 | 0.102 | July 16 | 0.100 | June 24 | 0.089 | June 1 | 0.087 | May 31 |
2000 | 1 | 5 | 0.084 | June 10 | 0.073 | June 1 | 0.072 | Aug 9 | 0.070 | June 2 |
2001 | 13 | 21 | 0.111 | June 20 | 0.107 | June 19 | 0.100 | Aug 2 | 0.094 | July 24 |
2002 | 18 | 22 | 0.126 | Aug 13 | 0.117 | Aug 14 | 0.102 | July 3 | 0.102 | Sept 9 |
2003 | 4 | 8 | 0.102 | June 27 | 0.083 | June 25 | 0.078 | June 26 | 0.078 | July 4 |
2004 | 5 | 7 | 0.094 | June 8 | 0.081 | July 22 | 0.080 | July 23 | 0.079 | July 30 |
2005 | 9 | 14 | 0.095 | June 25 | 0.091 | June 26 | 0.089 | Aug 11 | 0.086 | June 24 |
2006 | 5 | 9 | 0.083 | June 22 | 0.083 | July 2 | 0.083 | July 18 | 0.079 | July 1 |
2007 | 3 | 4 | 0.082 | Sept 25 | 0.080 | April 23 | 0.076 | Sept 26 | 0.073 | Aug 3 |
2008 | 1 | 5 | 0.083 | June 10 | 0.073 | July 3 | 0.072 | July 18 | 0.072 | July 26 |
2009 | 3 | 5 | 0.081 | April 28 | 0.080 | May 22 | 0.076 | May 21 | 0.075 | Aug 18 |
2010 | 1 | 3 | 0.079 | Sep 2 | 0.074 | July 21 | 0.071 | Sep 1 | 0.070 | July 28 |
2011 | 1 | 2 | 0.077 | July 21 | 0.074 | July 11 | 0.069 | July 6 | 0.066 | July 17 |
2012 | 1 | 1 | 0.085 | July 17 | 0.070 | July 15 | 0.069 | July 11 | 0.067 | April 16 |
2013 | 2 | 4 | 0.077 | May 31 | 0.076 | July 19 | 0.072 | Sept 11 | 0.071 | June 25 |
2014 | 0 | 0 | 0.065 | July 22 | 0.062 | May 12 | 0.061 | Sept 5 | 0.060 | June 30 |
2015 | 0 | 1 | 0.078 | Sept 18 | 0.059 | Sept 7 | 0.057 | May 4 | 0.056 | May 24 |
2016 | 0 | 0 | 0.067 | July 22 | 0.061 | July 6 | 0.061 | July 21 | 0.058 | July 18 |
2017 | 1 | 3 | 0.076 | May 17 | 0.072 | May 18 | 0.072 | June 12 | 0.069 | June 11 |
2018 | 0 | 1 | 0.073 | May 2 | 0.070 | May 25 | 0.070 | July 10 | 0.067 | May 26 |
2019 | 0 | 0 | 0.066 | July 3 | 0.063 | Aug 30 | 0.062 | July 30 | 0.061 | June 5 |
2020 | 0 | 0 | 0.065 | Aug 11 | 0.061 | Aug 21 | 0.057 | June 26 | 0.057 | July 27 |
2021 | 0 | 1 | 0.074 | June 5 | 0.067 | June 6 | 0.060 | May 22 | 0.060 | June 7 |
2022 | 0 | 2 | 0.074 | July 24 | 0.071 | Aug 20 | 0.069 | July 1 | 0.068 | Aug 4 |
Brockton
Operating from 2014 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2014 | 0 | 0 | 0.066 | July 22 | 0.065 | June 2 | 0.064 | May 12 | 0.060 | July 31 |
2015 | 0 | 1 | 0.078 | Sept 18 | 0.068 | Sept 8 | 0.068 | June 11 | 0.065 | July 1 |
2016 | 0 | 1 | 0.072 | July 22 | 0.070 | May 26 | 0.068 | May 25 | 0.067 | July 16 |
2017 | 1 | 4 | 0.084 | May 18 | 0.074 | June 11 | 0.073 | May 17 | 0.072 | June 12 |
2018 | 1 | 3 | 0.078 | May 2 | 0.074 | May 25 | 0.072 | July 10 | 0.070 | May 26 |
2019 | 0 | 0 | 0.067 | July 30 | 0.063 | July 3 | 0.061 | July 31 | 0.061 | Aug 30 |
2020 | 0 | 0 | 0.064 | July 27 | 0.062 | Aug 21 | 0.061 | July 30 | 0.060 | June 26 |
2021 | 0 | 1 | 0.071 | June 5 | 0.067 | June 6 | 0.062 | Aug 26 | 0.061 | May 18 |
2022 | 0 | 0 | 0.068 | July 24 | 0.064 | July 20 | 0.064 | Aug 20 | 0.063 | July 1 |
Chelmsford
Operating from 2005 to Present |
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---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2005 | 8 | 12 | 0.095 | June 27 | 0.085 | June 25 | 0.080 | April 20 | 0.079 | June 24 |
2006 | 2 | 5 | 0.083 | June 19 | 0.077 | June 22 | 0.073 | Mar 31 | 0.071 | June 18 |
2007 | 9 | 17 | 0.095 | Aug 30 | 0.091 | Aug 3 | 0.089 | May 25 | 0.087 | June 27 |
2008 | 1 | 3 | 0.079 | July 3 | 0.071 | April 23 | 0.071 | July 8 | 0.069 | June 10 |
2009 | 1 | 2 | 0.076 | May 22 | 0.073 | May 21 | 0.069 | Aug 18 | 0.068 | April 28 |
2010 | 1 | 2 | 0.079 | Sep 2 | 0.074 | July 28 | 0.069 | July 16 | 0.069 | Aug 9 |
2011 | 1 | 2 | 0.086 | July 21 | 0.074 | July 11 | 0.068 | June 8 | 0.064 | May 27 |
2012 | 1 | 4 | 0.089 | July 17 | 0.075 | July 13 | 0.073 | Aug 4 | 0.072 | Aug 9 |
2013 | 0 | 2 | 0.071 | July 19 | 0.071 | Sept 11 | 0.067 | April 29 | 0.067 | June 22 |
2014 | 0 | 0 | 0.069 | June 3 | 0.064 | April 22 | 0.064 | May 12 | 0.064 | June 2 |
2015 | 0 | 1 | 0.076 | Sept 18 | 0.070 | May 4 | 0.068 | Sept 17 | 0.063 | Aug 18 |
2016 | 0 | 0 | 0.070 | May 25 | 0.067 | May 27 | 0.067 | July 25 | 0.066 | July 13 |
2017 | 0 | 1 | 0.072 | May 17 | 0.067 | May 18 | 0.067 | April 11 | 0.065 | June 10 |
2018 | 0 | 0 | 0.069 | May 2 | 0.069 | May 25 | 0.067 | May 26 | 0.066 | June 18 |
2019 | 0 | 0 | 0.064 | June 5 | 0.060 | July 30 | 0.058 | July 16 | 0.056 | March 24 |
2020 | 0 | 0 | 0.068 | Aug 11 | 0.067 | July 19 | 0.062 | June 17 | 0.059 | June 4 |
2021 | 0 | 0 | 0.061 | June 6 | 0.059 | Mar 11 | 0.059 | April 24 | 0.059 | June 5 |
2022 | 0 | 0 | 0.067 | July 1 | 0.065 | Aug 20 | 0.062 | July 24 | 0.062 | Aug 4 |
Chelsea
Operating from 1984 to 1999 |
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---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 3 | 7 | 0.089 | June 18 | 0.086 | June 17 | 0.086 | Aug 9 | 0.074 | July 19 |
1995 | 9 | 15 | 0.101 | Aug 1 | 0.084 | July 13 | 0.083 | June 30 | 0.083 | Aug 10 |
1996 | 0 | 4 | 0.075 | July 12 | 0.073 | Aug 9 | 0.072 | Aug 7 | 0.071 | Aug 6 |
1997 | 3 | 6 | 0.086 | June 30 | 0.085 | Aug 10 | 0.081 | June 21 | 0.075 | June 12 |
1998 | 7 | 9 | 0.095 | Aug 24 | 0.088 | May 29 | 0.088 | July 14 | 0.087 | July 15 |
1999 | 8 | 13 | 0.102 | July 16 | 0.093 | July 17 | 0.089 | June 24 | 0.084 | May 31 |
Chicopee
Operating from 1983 to Present |
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---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 17 | 28 | 0.102 | Aug 4 | 0.102 | July 20 | 0.097 | June 17 | 0.095 | Aug 1 |
1995 | 17 | 25 | 0.101 | July 13 | 0.100 | June 30 | 0.095 | July 4 | 0.093 | July 28 |
1996 | 6 | 12 | 0.094 | July 8 | 0.094 | Aug 7 | 0.087 | Aug 8 | 0.082 | July 12 |
1997 | 10 | 12 | 0.104 | July 1 | 0.097 | Aug 11 | 0.095 | June 21 | 0.092 | July 27 |
1998 | 14 | 15 | 0.104 | July 16 | 0.102 | July 14 | 0.097 | July 15 | 0.093 | Aug 24 |
1999 | 15 | 16 | 0.095 | June 1 | 0.093 | July 30 | 0.089 | July 16 | 0.088 | June 27 |
2000 | 4 | 4 | 0.090 | June 10 | 0.084 | June 16 | 0.084 | June 26 | 0.079 | June 2 |
2001 | 18 | 24 | 0.105 | June 19 | 0.098 | June 20 | 0.097 | May 4 | 0.090 | May 2 |
2002 | 20 | 25 | 0.118 | Aug 14 | 0.115 | Aug 12 | 0.108 | July 22 | 0.108 | Aug 13 |
2003 | 8 | 12 | 0.099 | June 25 | 0.093 | June 29 | 0.089 | June 27 | 0.084 | June 26 |
2004 | 4 | 7 | 0.093 | July 22 | 0.083 | Aug 10 | 0.080 | June 24 | 0.078 | May 15 |
2005 | 15 | 16 | 0.104 | June 9 | 0.098 | Aug 12 | 0.095 | June 26 | 0.090 | June 25 |
2006 | 11 | 14 | 0.119 | June 19 | 0.102 | June 18 | 0.091 | June 22 | 0.090 | July 27 |
2007 | 18 | 25 | 0.112 | July 9 | 0.109 | July 10 | 0.102 | Aug 3 | 0.098 | Aug 30 |
2008 | 6 | 12 | 0.086 | June 10 | 0.085 | June 28 | 0.080 | July 26 | 0.078 | April 19 |
2009 | 4 | 7 | 0.080 | May 22 | 0.078 | Aug 20 | 0.077 | April 27 | 0.076 | Aug 18 |
2010 | 2 | 7 | 0.091 | Sep 2 | 0.078 | July 28 | 0.075 | May 1 | 0.074 | May 2 |
2011 | 2 | 5 | 0.081 | July 21 | 0.076 | July 11 | 0.075 | July 20 | 0.074 | June 21 |
2012 | 2 | 10 | 0.084 | July 13 | 0.076 | July 17 | 0.075 | May 29 | 0.074 | Sept 14 |
2013 | 1 | 4 | 0.082 | Sept 11 | 0.072 | May 31 | 0.072 | June 1 | 0.071 | June 22 |
2014 | 0 | 1 | 0.072 | Sept 9 | 0.070 | July 23 | 0.066 | July 8 | 0.066 | July 31 |
2015 | 1 | 3 | 0.084 | Sept 18 | 0.074 | Aug 3 | 0.071 | June 12 | 0.070 | May 8 |
2016 | 4 | 6 | 0.090 | May 26 | 0.079 | May 27 | 0.077 | May 25 | 0.076 | May 28 |
2017 | 0 | 4 | 0.074 | May 17 | 0.072 | May 18 | 0.072 | Aug 3 | 0.072 | June 30 |
2018 | 1 | 2 | 0.078 | June 18 | 0.074 | July 16 | 0.070 | May 25 | 0.070 | July 2 |
2019 | 0 | 0 | 0.068 | June 5 | 0.068 | July 30 | 0.063 | July 16 | 0.060 | July 11 |
2020 | 0 | 0 | 0.063 | July 9 | 0.062 | June 17 | 0.061 | May 15 | 0.061 | July 19 |
2021 | 0 | 1 | 0.072 | May 26 | 0.065 | May 18 | 0.065 | May 21 | 0.064 | June 6 |
2022 | 0 | 1 | 0.075 | Aug 20 | 0.069 | June 26 | 0.067 | July 1 | 0.067 | Aug 4 |
Easton
Operating from 1996 to 2001 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1996 | 8 | 17 | 0.094 | July 6 | 0.087 | Aug 7 | 0.085 | Aug 23 | 0.084 | June 17 |
1997 | 13 | 20 | 0.096 | June 30 | 0.095 | June 12 | 0.094 | July 17 | 0.093 | June 21 |
1998 | 11 | 17 | 0.105 | Aug 24 | 0.091 | July 15 | 0.090 | Sept 6 | 0.088 | Sept 27 |
1999 | 8 | 17 | 0.091 | June 24 | 0.089 | July 16 | 0.086 | July 17 | 0.083 | July 15 |
2000 | 2 | 4 | 0.081 | May 7 | 0.077 | July 3 | 0.074 | June 9 | 0.072 | June 10 |
2001 | 25 | 30 | 0.107 | Aug 2 | 0.103 | Aug 9 | 0.101 | June 20 | 0.098 | June 19 |
North Easton
Operating from 1982 to 1996 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 16 | 19 | 0.103 | Aug 9 | 0.102 | June 18 | 0.098 | July 13 | 0.098 | July 20 |
1995 | 20 | 27 | 0.108 | Aug 1 | 0.108 | Aug 2 | 0.106 | Aug 10 | 0.104 | July 14 |
1996 | 3 | 8 | 0.085 | July 6 | 0.078 | June 17 | 0.076 | Aug 7 | 0.075 | Aug 23 |
Fairhaven
Operating from 1982 to 2011, relocated and restarted in 2013 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 4 | 7 | 0.098 | July 13 | 0.080 | Aug 4 | 0.080 | Aug 28 | 0.077 | July 12 |
1995 | 14 | 23 | 0.125 | June 19 | 0.124 | Aug 21 | 0.107 | June 18 | 0.107 | July 14 |
1996 | 14 | 14 | 0.113 | July 18 | 0.104 | June 14 | 0.092 | May 20 | 0.092 | July 6 |
1997 | 18 | 25 | 0.107 | July 14 | 0.106 | July 17 | 0.103 | Aug 2 | 0.092 | Aug 3 |
1998 | 12 | 19 | 0.099 | Sept 6 | 0.087 | May 28 | 0.084 | Aug 4 | 0.083 | Aug 3 |
1999 | 14 | 19 | 0.112 | July 16 | 0.109 | June 7 | 0.101 | June 23 | 0.098 | July 6 |
2000 | 8 | 13 | 0.105 | June 10 | 0.090 | July 2 | 0.085 | Aug 8 | 0.082 | May 7 |
2001 | 16 | 18 | 0.117 | Aug 7 | 0.113 | Aug 9 | 0.109 | May 4 | 0.101 | Aug 2 |
2002 | 15 | 20 | 0.105 | July 2 | 0.102 | July 18 | 0.087 | July 1 | 0.087 | July 3 |
2003 | 15 | 19 | 0.117 | June 27 | 0.101 | Aug 16 | 0.100 | June 26 | 0.098 | June 25 |
2004 | 7 | 13 | 0.099 | June 9 | 0.084 | June 8 | 0.082 | May 11 | 0.080 | July 4 |
2005 | 9 | 11 | 0.086 | Aug 11 | 0.084 | April 20 | 0.084 | Aug 2 | 0.082 | June 8 |
2006 | 8 | 12 | 0.107 | July 18 | 0.104 | Aug 1 | 0.093 | Aug 2 | 0.085 | July 17 |
2007 | 3 | 9 | 0.086 | May 25 | 0.083 | July 8 | 0.082 | Aug 2 | 0.075 | June 28 |
2008 | 4 | 8 | 0.088 | July 18 | 0.085 | July 17 | 0.082 | July 19 | 0.080 | June 10 |
2009 | 1 | 3 | 0.078 | Aug 18 | 0.072 | Aug 26 | 0.071 | Aug 4 | 0.069 | May 21 |
2010 | 5 | 5 | 0.081 | July 5 | 0.079 | July 17 | 0.078 | July 6 | 0.077 | June 24 |
2011 | 4 | 5 | 0.085 | June 7 | 0.081 | July 16 | 0.080 | June 8 | 0.076 | July 22 |
2013* | 1 | 1 | 0.087 | July 18 | 0.067 | July 19 | 0.067 | Aug 21 | 0.064 | July 20 |
2014 | 0 | 0 | 0.062 | May 12 | 0.061 | May 26 | 0.058 | July 22 | 0.058 | Aug 17 |
2015 | 0 | 3 | 0.075 | Aug 1 | 0.072 | Sept 17 | 0.071 | Aug 15 | 0.067 | June 11 |
2016 | 1 | 3 | 0.076 | May 26 | 0.075 | May 25 | 0.072 | July 6 | 0.070 | July 15 |
2017 | 2 | 4 | 0.083 | June 12 | 0.083 | May 18 | 0.074 | June 12 | 0.073 | May 19 |
2018 | 2 | 3 | 0.085 | Aug 28 | 0.080 | Aug 29 | 0.074 | May 2 | 0.070 | Aug 17 |
2019 | 0 | 0 | 0.069 | July 10 | 0.063 | Aug 22 | 0.062 | July 29 | 0.060 | July 16 |
2020 | 1 | 2 | 0.076 | July 27 | 0.072 | July 28 | 0.065 | July 30 | 0.064 | June 26 |
2021 | 1 | 2 | 0.084 | Aug 26 | 0.071 | June 6 | 0.068 | Aug 13 | 0.067 | Aug 7 |
2022 | 0 | 1 | 0.073 | July 20 | 0.067 | July 23 | 0.059 | July 24 | 0.058 | July 22 |
*Site did not meet 75% minimum data completeness requirement. |
Fall River
Operating from 2012 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2012 | 6 | 7 | 0.090 | June 29 | 0.082 | June 30 | 0.080 | July 18 | 0.078 | June 22 |
2013 | 4 | 7 | 0.090 | July 18 | 0.080 | June 25 | 0.079 | July 19 | 0.078 | May 30 |
2014 | 0 | 0 | 0.065 | Aug 5 | 0.064 | July 22 | 0.060 | May 12 | 0.059 | July 28 |
2015 | 0 | 3 | 0.077 | June 11 | 0.073 | July 29 | 0.072 | Sept 17 | 0.070 | Aug 15 |
2016 | 4 | 4 | 0.080 | May 26 | 0.078 | May 25 | 0.077 | July 15 | 0.076 | July 6 |
2017 | 3 | 5 | 0.085 | May 18 | 0.078 | June 12 | 0.076 | June 13 | 0.073 | June 11 |
2018 | 3 | 10 | 0.080 | May 2 | 0.080 | July 10 | 0.080 | Aug 28 | 0.075 | June 17 |
2019 | 0 | 0 | 0.069 | July 10 | 0.065 | July 30 | 0.064 | July 29 | 0.062 | June 29 |
2020 | 0 | 2 | 0.073 | July 27 | 0.071 | July 30 | 0.067 | July 28 | 0.066 | June 26 |
2021 | 1 | 2 | 0.079 | Aug 26 | 0.071 | June 6 | 0.069 | Aug 7 | 0.069 | Aug 13 |
2022 | 0 | 1 | 0.075 | July 20 | 0.067 | July 23 | 0.061 | June 26 | 0.061 | July 24 |
Greenfield
Operating from 2014 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2014 | 0 | 0 | 0.067 | June 3 | 0.062 | July 1 | 0.061 | May 12 | 0.058 | June 2 |
2015 | 0 | 0 | 0.070 | June 12 | 0.068 | May 4 | 0.065 | May 8 | 0.064 | May 25 |
2016 | 0 | 3 | 0.075 | May 26 | 0.075 | May 27 | 0.071 | May 25 | 0.068 | June 20 |
2017 | 0 | 0 | 0.067 | June 12 | 0.066 | April 11 | 0.064 | May 17 | 0.064 | June 23 |
2018 | 0 | 0 | 0.070 | May 25 | 0.067 | May 26 | 0.067 | July 2 | 0.066 | May 2 |
2019 | 0 | 0 | 0.065 | June 5 | 0.065 | Aug 6 | 0.061 | July 11 | 0.056 | July 5 |
2020 | 0 | 0 | 0.060 | June 23 | 0.055 | Aug 11 | 0.052 | April 19 | 0.052 | May 21 |
2021 | 0 | 0 | 0.067 | May 21 | 0.063 | June 6 | 0.060 | May 18 | 0.060 | June 5 |
2022 | 0 | 0 | 0.064 | June 26 | 0.064 | July 1 | 0.061 | Aug 20 | 0.060 | July 28 |
Haverhill
Operating from 2004 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2004 | 3 | 4 | 0.091 | July 22 | 0.078 | July 23 | 0.078 | July 30 | 0.072 | Aug 10 |
2005 | 13 | 13 | 0.084 | Sept 14 | 0.079 | June 25 | 0.079 | July 26 | 0.078 | June 24 |
2006 | 2 | 8 | 0.089 | June 19 | 0.081 | June 22 | 0.075 | July 25 | 0.075 | July 26 |
2007 | 11 | 18 | 0.096 | Aug 3 | 0.095 | Aug 30 | 0.092 | May 25 | 0.090 | June 27 |
2008 | 3 | 8 | 0.093 | June 10 | 0.084 | July 3 | 0.083 | July 8 | 0.073 | April 23 |
2009 | 0 | 3 | 0.075 | Aug 18 | 0.074 | May 22 | 0.073 | May 21 | 0.070 | Aug 4 |
2010 | 1 | 4 | 0.076 | Sep 2 | 0.074 | July 28 | 0.072 | Sep 1 | 0.071 | July 16 |
2011 | 1 | 3 | 0.086 | July 21 | 0.075 | July 11 | 0.075 | June 8 | 0.066 | May 27 |
2012 | 3 | 5 | 0.089 | July 17 | 0.079 | July 13 | 0.079 | Aug 9 | 0.074 | Aug 17 |
2013 | 0 | 0 | 0.069 | June 1 | 0.068 | June 22 | 0.068 | July 19 | 0.068 | Sept 11 |
2014 | 0 | 0 | 0.065 | April 22 | 0.065 | June 17 | 0.064 | July 22 | 0.064 | Sept 5 |
2015 | 0 | 1 | 0.077 | Sept 18 | 0.067 | May 4 | 0.062 | Aug 18 | 0.059 | July 30 |
2016 | 0 | 1 | 0.071 | July 13 | 0.067 | May 25 | 0.064 | July 6 | 0.064 | July 1 |
2017 | 0 | 0 | 0.069 | May 17 | 0.067 | June 10 | 0.065 | April 10 | 0.065 | April 11 |
2018 | 0 | 0 | 0.067 | May 26 | 0.066 | May 25 | 0.066 | June 18 | 0.064 | May 2 |
2019 | 0 | 0 | 0.062 | July 30 | 0.057 | July 11 | 0.056 | July 16 | 0.055 | June 5 |
2020 | 0 | 0 | 0.069 | Aug 11 | 0.063 | July 19 | 0.060 | June 23 | 0.056 | July 6 |
2021 | 0 | 0 | 0.067 | May 26 | 0.066 | June 6 | 0.064 | June 5 | 0.063 | June 18 |
2022 | 0 | 1 | 0.074 | Aug 20 | 0.065 | Aug 6 | 0.062 | July 24 | 0.062 | Aug 4 |
Lawrence
Operating from 1982 to 2002 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 5 | 7 | 0.096 | June 18 | 0.087 | July 21 | 0.084 | Aug 9 | 0.082 | July 20 |
1995 | 1 | 3 | 0.077 | July 13 | 0.074 | Aug 9 | 0.071 | June 30 | 0.069 | July 5 |
1996 | 7 | 8 | 0.085 | Aug 8 | 0.081 | July 12 | 0.080 | Aug 4 | 0.079 | June 2 |
1997 | 4 | 7 | 0.108 | July 1 | 0.088 | Aug 11 | 0.081 | Aug 10 | 0.078 | July 27 |
1998 | 4 | 6 | 0.088 | Aug 24 | 0.081 | July 16 | 0.077 | July 14 | 0.076 | May 29 |
1999 | 2 | 3 | 0.088 | June 1 | 0.083 | May 31 | 0.075 | June 2 | 0.068 | June 6 |
2000 | 0 | 0 | 0.067 | June 16 | 0.062 | June 10 | 0.062 | May 4 | 0.060 | Aug 9 |
2001 | 0 | 1 | 0.073 | June 19 | 0.066 | June 20 | 0.063 | June 14 | 0.062 | July 24 |
2002 | 13 | 15 | 0.109 | Aug 12 | 0.105 | Aug 13 | 0.102 | Aug 14 | 0.088 | June 21 |
Lynn
Operating from 1993 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 14 | 19 | 0.097 | June 17 | 0.096 | June 18 | 0.094 | July 21 | 0.090 | Aug 9 |
1995 | 17 | 23 | 0.116 | Aug 1 | 0.100 | July 13 | 0.098 | Aug 10 | 0.094 | June 30 |
1996 | 9 | 14 | 0.091 | Aug 9 | 0.085 | Aug 23 | 0.083 | July 8 | 0.083 | Aug 7 |
1997 | 11 | 14 | 0.104 | July 1 | 0.096 | June 30 | 0.093 | June 21 | 0.091 | Aug 10 |
1998 | 11 | 14 | 0.108 | Aug 24 | 0.105 | July 15 | 0.103 | May 29 | 0.100 | July 14 |
1999 | 14 | 18 | 0.109 | July 16 | 0.101 | June 24 | 0.096 | July 17 | 0.088 | May 31 |
2000 | 1 | 3 | 0.089 | June 10 | 0.073 | June 1 | 0.073 | July 3 | 0.070 | Aug 9 |
2001 | 17 | 20 | 0.111 | June 20 | 0.102 | Aug 2 | 0.101 | July 24 | 0.100 | July 23 |
2002 | 25 | 29 | 0.123 | Aug 13 | 0.122 | Aug 14 | 0.109 | June 26 | 0.100 | July 9 |
2003 | 6 | 12 | 0.100 | June 27 | 0.092 | Aug 22 | 0.088 | June 25 | 0.079 | June 26 |
2004 | 6 | 10 | 0.092 | June 8 | 0.088 | July 30 | 0.083 | July 23 | 0.083 | Aug 3 |
2005 | 11 | 14 | 0.099 | June 25 | 0.096 | June 26 | 0.094 | June 24 | 0.088 | July 26 |
2006 | 5 | 10 | 0.086 | June 19 | 0.084 | June 18 | 0.079 | June 22 | 0.078 | July 18 |
2007 | 13 | 18 | 0.103 | Aug 3 | 0.102 | July 26 | 0.093 | May 25 | 0.088 | June 27 |
2008 | 5 | 10 | 0.086 | July 18 | 0.081 | June 10 | 0.079 | July 3 | 0.078 | July 8 |
2009 | 2 | 4 | 0.079 | May 22 | 0.077 | Aug 18 | 0.073 | April 28 | 0.073 | May 21 |
2010 | 1 | 4 | 0.083 | Sep 2 | 0.075 | Aug 9 | 0.075 | Sep 1 | 0.072 | July 28 |
2011 | 1 | 3 | 0.085 | July 21 | 0.075 | July 11 | 0.074 | July 6 | 0.069 | June 7 |
2012 | 2 | 7 | 0.091 | July 17 | 0.076 | July 15 | 0.074 | July 13 | 0.072 | June 29 |
2013 | 2 | 5 | 0.078 | July 19 | 0.078 | Sept 11 | 0.074 | May 31 | 0.073 | June 25 |
2014 | 0 | 1 | 0.073 | June 30 | 0.066 | July 22 | 0.064 | May 12 | 0.063 | June 2 |
2015 | 0 | 2 | 0.075 | Sept 18 | 0.074 | Sept 8 | 0.066 | Sept 7 | 0.065 | Aug 18 |
2016 | 0 | 1 | 0.071 | July 22 | 0.070 | May 25 | 0.069 | July 6 | 0.067 | July 25 |
2017 | 1 | 4 | 0.081 | May 17 | 0.074 | May 18 | 0.074 | June 12 | 0.071 | June 11 |
2018 | 0 | 4 | 0.075 | May 2 | 0.074 | May 25 | 0.072 | July 10 | 0.071 | May 26 |
2019 | 1 | 1 | 0.077 | July 30 | 0.067 | July 31 | 0.066 | Aug 30 | 0.065 | June 5 |
2020 | 0 | 0 | 0.068 | Aug 11 | 0.061 | Aug 21 | 0.060 | July 27 | 0.059 | June 26 |
2021 | 0 | 0 | 0.066 | June 6 | 0.067 | Aug 26 | 0.065 | June 5 | 0.063 | June 7 |
2022 | 0 | 3 | 0.073 | July 20 | 0.073 | July 23 | 0.071 | July 24 | 0.070 | July 1 |
Martha's Vineyard
Operating from 2004 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2004 | 1 | 7 | 0.078 | July 4 | 0.074 | June 23 | 0.074 | July 22 | 0.072 | June 30 |
2005 | 11 | 18 | 0.106 | Aug 11 | 0.104 | Aug 2 | 0.088 | Sept 12 | 0.087 | June 5 |
2006 | 6 | 9 | 0.112 | Aug 1 | 0.112 | Aug 2 | 0.101 | Aug 3 | 0.089 | July 29 |
2007 | 4 | 6 | 0.094 | May 26 | 0.091 | May 25 | 0.088 | June 17 | 0.077 | April 23 |
2008 | 5 | 9 | 0.101 | June 9 | 0.100 | July 29 | 0.087 | July 17 | 0.083 | June 10 |
2009 | 1 | 4 | 0.078 | Aug 26 | 0.075 | May 20 | 0.074 | May 21 | 0.071 | Aug 18 |
2010 | 6 | 9 | 0.100 | July 4 | 0.086 | July 18 | 0.081 | Aug 31 | 0.080 | Sep 1 |
2011 | 5 | 8 | 0.113 | July 22 | 0.093 | June 8 | 0.082 | June 7 | 0.078 | July 23 |
2012 | 8 | 12 | 0.100 | June 21 | 0.094 | June 20 | 0.083 | June 29 | 0.082 | July 14 |
2013 | 1 | 2 | 0.079 | July 18 | 0.071 | July 16 | 0.065 | June 24 | 0.065 | June 25 |
2014 | 0 | 0 | 0.066 | Aug 17 | 0.062 | June 8 | 0.059 | May 11 | 0.059 | May 26 |
2015 | 0 | 2 | 0.074 | July 12 | 0.074 | Aug 31 | 0.068 | July 20 | 0.068 | Aug 1 |
2016 | 1 | 2 | 0.078 | May 25 | 0.074 | May 26 | 0.069 | July 6 | 0.066 | Sept 9 |
2017 | 4 | 4 | 0.096 | June 13 | 0.095 | July 3 | 0.083 | June 12 | 0.076 | July 21 |
2018 | 0 | 3 | 0.073 | July 1 | 0.073 | Aug 6 | 0.071 | May 2 | 0.068 | Aug 16 |
2019 | 4 | 1 | 0.078 | July 30 | 0.075 | July 21 | 0.074 | July 14 | 0.071 | Aug 22 |
2020 | 1 | 1 | 0.078 | July 27 | 0.065 | Aug 25 | 0.061 | July 28 | 0.060 | June 26 |
2021 | 0 | 0 | 0.070 | June 6 | 0.070 | Aug 26 | 0.068 | Aug 24 | 0.064 | May 18 |
2022 | 1 | 1 | 0.078 | July 23 | 0.070 | July 20 | 0.069 | July 19 | 0.064 | Aug 19 |
Newbury
Operating from 1994 to 2009 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 4 | 4 | 0.084 | Aug 26 | 0.084 | Aug 28 | 0.082 | Aug 25 | 0.077 | Sept 17 |
1995 | 8 | 13 | 0.101 | Aug 10 | 0.098 | June 30 | 0.092 | Aug 1 | 0.083 | July 5 |
1996 | 8 | 12 | 0.087 | Aug 6 | 0.085 | July 8 | 0.084 | Aug 8 | 0.083 | July 12 |
1997 | 9 | 11 | 0.106 | June 30 | 0.104 | July 1 | 0.087 | June 21 | 0.087 | July 27 |
1998 | 7 | 13 | 0.103 | May 29 | 0.096 | July 16 | 0.096 | Aug 5 | 0.089 | July 14 |
1999 | 9 | 14 | 0.112 | July 16 | 0.108 | June 24 | 0.089 | May 31 | 0.087 | July 23 |
2000 | 1 | 5 | 0.082 | June 1 | 0.074 | July 2 | 0.074 | July 3 | 0.071 | June 21 |
2001 | 16 | 19 | 0.117 | June 20 | 0.099 | June 19 | 0.095 | June 15 | 0.093 | July 24 |
2002 | 18 | 22 | 0.126 | Aug 14 | 0.120 | Aug 13 | 0.103 | Aug 12 | 0.094 | June 21 |
2003 | 7 | 10 | 0.099 | June 27 | 0.092 | June 25 | 0.082 | April 15 | 0.080 | Aug 22 |
2004 | 5 | 7 | 0.085 | July 30 | 0.084 | July 23 | 0.079 | Aug 3 | 0.077 | June 8 |
2005 | 5 | 7 | 0.083 | July 22 | 0.082 | June 26 | 0.079 | April 20 | 0.078 | Aug 8 |
2006 | 3 | 9 | 0.086 | June 19 | 0.082 | June 18 | 0.078 | June 22 | 0.075 | July 15 |
2007 | 9 | 16 | 0.097 | Aug 3 | 0.094 | July 26 | 0.086 | May 25 | 0.086 | Sept 7 |
2008 | 3 | 8 | 0.085 | July 18 | 0.080 | June 10 | 0.077 | July 26 | 0.075 | July 3 |
2009 | 2 | 3 | 0.078 | May 22 | 0.077 | May 21 | 0.072 | April 28 | 0.068 | April 25 |
Newburyport
Operating from July 2010 to 2017 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2010 | 1 | 2 | 0.079 | Sept 1 | 0.074 | July 28 | 0.067 | July 21 | 0.066 | July 16 |
2011 | 1 | 2 | 0.082 | July 21 | 0.074 | July 11 | 0.068 | June 7 | 0.066 | June 9 |
2012 | 2 | 5 | 0.082 | July 17 | 0.080 | July 13 | 0.075 | Aug 23 | 0.074 | June 22 |
2013 | 0 | 4 | 0.074 | June 21 | 0.073 | Aug 21 | 0.073 | Sept 11 | 0.071 | June 1 |
2014 | 0 | 0 | 0.067 | June 30 | 0.067 | July 22 | 0.066 | June 2 | 0.064 | Sept 5 |
2015 | 0 | 2 | 0.077 | Sept 18 | 0.071 | Aug 18 | 0.070 | Sept 8 | 0.065 | May 4 |
2016 | 0 | 1 | 0.072 | July 28 | 0.068 | July 13 | 0.066 | May 28 | 0.065 | July 6 |
2017 | 0 | 0 | 0.069 | June 12 | 0.068 | May 18 | 0.067 | May 17 | 0.066 | Aug 10 |
Pittsfield
Operating from 2018 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2018* | 0 | 0 | 0.059 | July 20 | 0.055 | Aug 5 | 0.051 | Aug 7 | 0.051 | Aug 25 |
2019 | 0 | 0 | 0.066 | June 5 | 0.066 | July 11 | 0.060 | Mar 30 | 0.060 | July 30 |
2020 | 0 | 0 | 0.058 | June 10 | 0.058 | Aug 11 | 0.056 | June 23 | 0.054 | July 19 |
2021 | 0 | 0 | 0.066 | May 18 | 0.066 | June 18 | 0.064 | June 6 | 0.063 | May 21 |
2022 | 0 | 0 | 0.066 | July 1 | 0.064 | June 26 | 0.063 | April 13 | 0.063 | Aug 20 |
*Site did not meet 75% minimum data completeness requirement. |
Scituate
Operating from 1987 to 1997 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 6 | 9 | 0.088 | July 13 | 0.087 | Aug 9 | 0.082 | July 20 | 0.082 | July 21 |
1995 | 4 | 7 | 0.089 | Aug 1 | 0.084 | June 18 | 0.084 | July 14 | 0.081 | Aug 10 |
1996 | 0 | 1 | 0.073 | July 6 | 0.067 | Aug 6 | 0.064 | Sept 4 | 0.063 | July 16 |
1997 | 3 | 4 | 0.088 | July 14 | 0.080 | June 30 | 0.080 | July 1 | 0.071 | July 17 |
Stow
Operating from 1998 to 2011 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1998 | 8 | 10 | 0.109 | May 29 | 0.098 | Aug 24 | 0.090 | July 14 | 0.090 | July 15 |
1999 | 14 | 22 | 0.096 | July 16 | 0.095 | Aug 17 | 0.094 | July 30 | 0.093 | June 1 |
2000 | 2 | 8 | 0.099 | June 10 | 0.077 | June 2 | 0.075 | May 7 | 0.073 | July 13 |
2001 | 17 | 24 | 0.105 | June 19 | 0.101 | July 23 | 0.101 | July 24 | 0.098 | June 20 |
2002 | 16 | 21 | 0.110 | Aug 13 | 0.107 | Aug 12 | 0.106 | Aug 14 | 0.096 | June 26 |
2003 | 3 | 4 | 0.083 | June 27 | 0.079 | June 26 | 0.077 | June 24 | 0.073 | June 29 |
2004 | 1 | 3 | 0.085 | June 8 | 0.075 | July 22 | 0.071 | July 23 | 0.070 | June 24 |
2005 | 5 | 6 | 0.091 | June 25 | 0.087 | June 24 | 0.084 | July 26 | 0.083 | April 20 |
2006 | 3 | 8 | 0.084 | June 18 | 0.083 | June 19 | 0.076 | June 22 | 0.075 | May 25 |
2007 | 10 | 15 | 0.091 | Aug 3 | 0.091 | Aug 30 | 0.086 | May 25 | 0.086 | Sept 7 |
2008 | 2 | 6 | 0.090 | June 14 | 0.076 | July 3 | 0.075 | June 10 | 0.074 | July 8 |
2009 | 3 | 4 | 0.082 | May 22 | 0.078 | May 21 | 0.077 | April 28 | 0.071 | April 25 |
2010 | 1 | 1 | 0.077 | Sep 2 | 0.070 | May 22 | 0.070 | Aug 9 | 0.069 | July 7 |
2011 | 1 | 1 | 0.077 | July 21 | 0.066 | July 11 | 0.063 | Apr 10 | 0.063 | July 17 |
Sudbury
Operating from 1982 to 1998 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 15 | 18 | 0.111 | Aug 9 | 0.099 | July 20 | 0.096 | July 21 | 0.093 | Aug 4 |
1995 | 16 | 24 | 0.111 | Aug 1 | 0.094 | June 30 | 0.092 | July 13 | 0.091 | Sept 7 |
1996 | 7 | 15 | 0.090 | July 12 | 0.090 | Aug 7 | 0.084 | Aug 8 | 0.084 | Aug 9 |
1997 | 10 | 15 | 0.106 | July 1 | 0.094 | June 30 | 0.090 | June 12 | 0.088 | June 21 |
1998 | 8 | 12 | 0.104 | Aug 24 | 0.091 | May 29 | 0.086 | July 14 | 0.085 | July 15 |
Truro
Operating from 1987 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 11 | 17 | 0.096 | July 13 | 0.092 | Aug 4 | 0.090 | Aug 28 | 0.088 | Aug 1 |
1995 | 16 | 24 | 0.125 | June 19 | 0.122 | July 14 | 0.122 | Aug 21 | 0.105 | June 18 |
1996 | 15 | 17 | 0.110 | May 21 | 0.106 | June 14 | 0.100 | July 6 | 0.096 | Aug 7 |
1997* | 24 | 29 | 0.110 | Aug 2 | 0.106 | June 30 | 0.104 | June 12 | 0.100 | June 11 |
1998 | 10 | 20 | 0.110 | Sept 2 | 0.086 | May 28 | 0.084 | Aug 5 | 0.084 | Sept 12 |
1999 | 19 | 23 | 0.116 | June 7 | 0.115 | July 16 | 0.104 | July 17 | 0.101 | June 24 |
2000 | 10 | 14 | 0.126 | June 10 | 0.094 | June 9 | 0.091 | Aug 8 | 0.083 | July 2 |
2001 | 15 | 25 | 0.124 | Aug 7 | 0.113 | May 4 | 0.108 | Aug 9 | 0.105 | Aug 2 |
2002 | 17 | 25 | 0.112 | Aug 13 | 0.105 | July 2 | 0.105 | July 18 | 0.093 | Aug 14 |
2003 | 16 | 24 | 0.110 | June 27 | 0.094 | June 25 | 0.094 | July 5 | 0.089 | Aug 16 |
2004 | 6 | 11 | 0.107 | June 9 | 0.089 | June 8 | 0.085 | May 11 | 0.083 | July 30 |
2005 | 15 | 18 | 0.095 | Aug 11 | 0.094 | Aug 5 | 0.088 | April 19 | 0.088 | April 20 |
2006 | 12 | 16 | 0.106 | Aug 1 | 0.104 | July 18 | 0.098 | Aug 2 | 0.082 | June 19 |
2007 | 13 | 16 | 0.093 | May 25 | 0.085 | June 26 | 0.082 | May 24 | 0.082 | July 25 |
2008 | 3 | 8 | 0.106 | June 10 | 0.086 | July 18 | 0.082 | July 19 | 0.075 | July 2 |
2009 | 2 | 4 | 0.082 | Aug 18 | 0.078 | Aug 26 | 0.073 | May 20 | 0.071 | May 22 |
2010 | 4 | 7 | 0.086 | June 24 | 0.079 | July 17 | 0.079 | Aug 31 | 0.078 | Sep 2 |
2011 | 0 | 3 | 0.074 | June 8 | 0.073 | July 22 | 0.071 | July 16 | 0.068 | June 7 |
2012 | 6 | 7 | 0.088 | June 30 | 0.085 | Aug 31 | 0.080 | June 22 | 0.079 | June 29 |
2013 | 3 | 4 | 0.079 | May 30 | 0.076 | June 25 | 0.076 | July 19 | 0.072 | May 31 |
2014 | 0 | 0 | 0.065 | May 12 | 0.064 | April 11 | 0.060 | June 2 | 0.059 | May 26 |
2015 | 2 | 4 | 0.077 | Sept 18 | 0.076 | Sept 17 | 0.071 | July 29 | 0.071 | Aug 1 |
2016 | 0 | 1 | 0.075 | May 25 | 0.069 | July 6 | 0.067 | July 15 | 0.065 | April 22 |
2017 | 3 | 4 | 0.085 | May 18 | 0.081 | June 13 | 0.079 | June 12 | 0.072 | May 19 |
2018 | 2 | 4 | 0.080 | May 2 | 0.076 | May 25 | 0.071 | May 26 | 0.071 | Aug 28 |
2019 | 0 | 0 | 0.068 | July 30 | 0.066 | Aug 22 | 0.062 | July 20 | 0.060 | July 29 |
2020 | 0 | 2 | 0.073 | July 27 | 0.071 | July 28 | 0.063 | Aug 26 | 0.063 | July 30 |
2021 | 1 | 3 | 0.078 | Aug 26 | 0.073 | June 6 | 0.071 | June 5 | 0.069 | May 18 |
2022 | 0 | 0 | 0.065 | July 20 | 0.063 | July 24 | 0.062 | June 26 | 0.060 | May 30 |
*Site did not meet 75% minimum data completeness requirement. |
Uxbridge
Operating from 2009 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
2009 | 2 | 4 | 0.086 | April 28 | 0.082 | May 22 | 0.073 | May 21 | 0.071 | Aug 18 |
2010 | 1 | 4 | 0.077 | Sep 2 | 0.074 | Aug 9 | 0.074 | Sep 22 | 0.071 | May 22 |
2011 | 3 | 3 | 0.076 | July 11 | 0.076 | July 6 | 0.074 | July 21 | 0.068 | June 8 |
2012 | 1 | 2 | 0.086 | July 17 | 0.071 | Sept 13 | 0.070 | May 13 | 0.070 | Aug 3 |
2013 | 0 | 1 | 0.074 | July 19 | 0.070 | May 31 | 0.070 | Sept 11 | 0.068 | April 28 |
2014 | 0 | 0 | 0.069 | May 12 | 0.066 | June 3 | 0.065 | June 2 | 0.064 | July 22 |
2015 | 0 | 0 | 0.069 | Sept 18 | 0.065 | Sept 7 | 0.063 | Sept 8 | 0.062 | May 4 |
2016 | 2 | 3 | 0.083 | July 22 | 0.077 | May 26 | 0.071 | May 27 | 0.070 | May 25 |
2017 | 2 | 2 | 0.083 | May 17 | 0.077 | May 18 | 0.070 | June 11 | 0.069 | April 11 |
2018 | 1 | 3 | 0.079 | May 2 | 0.074 | May 25 | 0.071 | July 10 | 0.070 | Aug 28 |
2019 | 0 | 0 | 0.068 | Aug 30 | 0.065 | June 5 | 0.060 | July 16 | 0.060 | July 28 |
2020 | 0 | 0 | 0.065 | July 19 | 0.063 | Aug 11 | 0.063 | Aug 21 | 0.059 | June 4 |
2021 | 0 | 1 | 0.072 | June 5 | 0.065 | June 18 | 0.063 | June 6 | 0.061 | April 24 |
Waltham
Operating from 1989 to 1999 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 11 | 14 | 0.098 | Aug 9 | 0.091 | July 20 | 0.083 | Aug 4 | 0.082 | July 19 |
1995 | 16 | 17 | 0.107 | Aug 1 | 0.093 | June 30 | 0.090 | May 24 | 0.090 | Sept 7 |
1996 | 3 | 6 | 0.086 | Aug 7 | 0.080 | July 12 | 0.076 | June 7 | 0.074 | Aug 26 |
1997 | 11 | 15 | 0.106 | July 1 | 0.095 | June 21 | 0.093 | June 30 | 0.092 | Aug 11 |
1998 | 17 | 24 | 0.116 | Aug 24 | 0.100 | July 15 | 0.099 | July 14 | 0.098 | May 29 |
1999 | 13 | 18 | 0.104 | July 16 | 0.098 | June 24 | 0.091 | June 1 | 0.091 | July 17 |
Ware
Operating from 1986 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 21 | 34 | 0.110 | July 20 | 0.109 | Aug 4 | 0.097 | Aug 25 | 0.095 | April 15 |
1995 | 13 | 21 | 0.110 | June 30 | 0.101 | July 13 | 0.097 | Aug 31 | 0.096 | Sept 7 |
1996 | 5 | 11 | 0.095 | Aug 7 | 0.093 | Aug 8 | 0.091 | July 8 | 0.085 | July 12 |
1997 | 22 | 32 | 0.119 | June 25 | 0.117 | July 1 | 0.115 | June 21 | 0.110 | Aug 11 |
1998 | 14 | 29 | 0.110 | May 29 | 0.102 | July 16 | 0.101 | July 14 | 0.093 | Aug 24 |
1999 | 13 | 20 | 0.106 | Aug 17 | 0.102 | June 1 | 0.094 | July 24 | 0.094 | July 31 |
2000 | 5 | 8 | 0.091 | June 10 | 0.089 | June 16 | 0.080 | July 3 | 0.076 | June 2 |
2001 | 23 | 26 | 0.119 | June 19 | 0.116 | June 20 | 0.099 | July 23 | 0.093 | May 4 |
2002 | 17 | 21 | 0.110 | Aug 14 | 0.107 | Aug 13 | 0.096 | Aug 11 | 0.095 | June 21 |
2003 | 3 | 5 | 0.084 | June 25 | 0.080 | June 29 | 0.077 | June 26 | 0.075 | July 2 |
2004 | 8 | 12 | 0.091 | Aug 10 | 0.090 | July 22 | 0.086 | Aug 3 | 0.083 | June 24 |
2005 | 12 | 21 | 0.101 | June 9 | 0.096 | June 8 | 0.091 | June 25 | 0.090 | July 26 |
2006 | 10 | 14 | 0.110 | June 19 | 0.103 | June 18 | 0.098 | June 22 | 0.086 | Aug 7 |
2007 | 15 | 24 | 0.113 | July 9 | 0.102 | Aug 3 | 0.093 | Aug 30 | 0.087 | Aug 29 |
2008 | 7 | 12 | 0.095 | June 10 | 0.082 | April 19 | 0.079 | May 30 | 0.079 | July 8 |
2009 | 4 | 8 | 0.079 | April 27 | 0.079 | May 22 | 0.077 | April 25 | 0.076 | May 21 |
2010 | 5 | 9 | 0.089 | Sep 2 | 0.084 | July 28 | 0.077 | May 1 | 0.076 | May 2 |
2011 | 1 | 3 | 0.084 | July 21 | 0.075 | July 11 | 0.075 | July 20 | 0.066 | June 21 |
2012 | 4 | 10 | 0.079 | July 17 | 0.077 | Aug 17 | 0.076 | May 13 | 0.076 | Sept 13 |
2013 | 0 | 2 | 0.075 | May 31 | 0.073 | June 1 | 0.069 | April 28 | 0.069 | June 22 |
2014 | 0 | 0 | 0.070 | June 3 | 0.069 | May 12 | 0.069 | June 17 | 0.068 | June 2 |
2015 | 0 | 4 | 0.073 | May 4 | 0.072 | May 26 | 0.072 | Aug 3 | 0.071 | May 8 |
2016 | 1 | 4 | 0.089 | May 26 | 0.075 | May 25 | 0.073 | May 27 | 0.072 | July 25 |
2017 | 1 | 3 | 0.077 | May 17 | 0.073 | May 18 | 0.072 | April 11 | 0.067 | April 10 |
2018 | 1 | 2 | 0.077 | June 18 | 0.071 | May 2 | 0.069 | May 25 | 0.065 | May 26 |
2019 | 0 | 0 | 0.068 | June 5 | 0.068 | July 16 | 0.067 | Sept 22 | 0.066 | Sept 23 |
2020 | 0 | 0 | 0.065 | June 4 | 0.062 | July 19 | 0.062 | Aug 11 | 0.058 | May 15 |
2021 | 0 | 0 | 0.066 | May 21 | 0.063 | May 18 | 0.063 | May 26 | 0.063 | Aug 11 |
2022 | 0 | 0 | 0.069 | Aug 4 | 0.069 | Aug 20 | 0.066 | Aug 6 | 0.063 | June 26 |
Worcester
Operating from 1992 to Present |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Year | # Days > | 1st High (ppm) | Date | 2nd High (ppm) | Date | 3rd High (ppm) | Date | 4th High (ppm) | Date | |
0.075 | 0.070 | |||||||||
1994 | 20 | 26 | 0.107 | Aug 9 | 0.102 | Aug 4 | 0.098 | Aug 25 | 0.097 | July 7 |
1995 | 15 | 22 | 0.108 | Sept 7 | 0.106 | July 13 | 0.101 | Aug 31 | 0.096 | June 30 |
1996 | 2 | 8 | 0.080 | July 12 | 0.078 | Aug 7 | 0.074 | June 6 | 0.074 | June 7 |
1997 | 8 | 14 | 0.097 | July 1 | 0.095 | June 30 | 0.094 | Aug 11 | 0.092 | Aug 10 |
1998 | 14 | 22 | 0.123 | Aug 24 | 0.109 | July 15 | 0.103 | May 29 | 0.097 | July 14 |
1999 | 14 | 21 | 0.101 | June 24 | 0.098 | Aug 17 | 0.096 | July 16 | 0.093 | June 1 |
2000 | 4 | 8 | 0.095 | June 10 | 0.081 | July 13 | 0.077 | June 2 | 0.076 | Aug 9 |
2001 | 9 | 13 | 0.102 | June 19 | 0.097 | July 24 | 0.093 | July 23 | 0.091 | Aug 9 |
2002 | 14 | 20 | 0.118 | Aug 13 | 0.102 | Aug 12 | 0.097 | Sept 10 | 0.091 | Aug 11 |
2003 | 9 | 16 | 0.089 | June 27 | 0.084 | June 29 | 0.080 | June 25 | 0.080 | July 12 |
2004 | 3 | 11 | 0.082 | June 8 | 0.082 | July 22 | 0.076 | Aug 10 | 0.074 | June 24 |
2005 | 8 | 14 | 0.092 | June 25 | 0.090 | April 20 | 0.087 | June 24 | 0.085 | June 9 |
2006 | 5 | 11 | 0.091 | June 19 | 0.091 | June 22 | 0.083 | Aug 7 | 0.077 | May 25 |
2007 | 20 | 26 | 0.096 | June 27 | 0.095 | Aug 3 | 0.090 | June 25 | 0.089 | May 25 |
2008 | 8 | 10 | 0.104 | June 14 | 0.089 | July 3 | 0.084 | July 8 | 0.081 | June 10 |
2009 | 4 | 8 | 0.082 | May 22 | 0.082 | Aug 18 | 0.080 | May 21 | 0.077 | April 28 |
2010 | 3 | 3 | 0.083 | Sep 2 | 0.078 | Aug 9 | 0.077 | July 28 | 0.070 | July 16 |
2011 | 2 | 2 | 0.089 | July 21 | 0.078 | July 11 | 0.066 | May 31 | 0.065 | July 6 |
2012 | 1 | 3 | 0.092 | July 17 | 0.074 | Sept 13 | 0.072 | Aug 17 | 0.070 | July 14 |
2013 | 0 | 1 | 0.074 | May 31 | 0.070 | June 1 | 0.070 | Sept 11 | 0.067 | April 28 |
2014 | 0 | 2 | 0.075 | June 3 | 0.073 | July 7 | 0.069 | July 22 | 0.066 | May 12 |
2015 | 0 | 0 | 0.068 | May 4 | 0.068 | Sept 18 | 0.063 | Sept 7 | 0.063 | Sept 8 |
2016 | 1 | 2 | 0.078 | May 26 | 0.074 | May 25 | 0.067 | May 27 | 0.066 | April 22 |
2017 | 1 | 3 | 0.076 | May 17 | 0.073 | May 18 | 0.072 | June 10 | 0.068 | April 11 |
2018 | 0 | 2 | 0.075 | June 18 | 0.071 | May 25 | 0.070 | May 2 | 0.065 | July 10 |
2019 | 0 | 0 | 0.065 | June 5 | 0.065 | July 16 | 0.062 | Sept 22 | 0.060 | July 30 |
2020 | 0 | 0 | 0.067 | July 19 | 0.066 | June 17 | 0.065 | Aug 11 | 0.063 | June 4 |
2021 | 0 | 0 | 0.067 | June 18 | 0.063 | Mar 11 | 0.063 | May 26 | 0.063 | June 5 |
2022 | 0 | 0 | 0.066 | July 1 | 0.063 | Aug 4 | 0.063 | Aug 20 | 0.061 | July 11 |