West Trends in PM10 Concentrations in 2000 - 2015

Year	Mean	Number of Trend Sites	10th Percentile	90th Percentile
2000	179.882352941176	85	40	168
2001	236.705882352941	85	43	159
2002	176.05294117647	85	44	268
2003	200.623529411764	85	32	214
2004	144.823529411764	85	38	137
2005	116.417647058823	85	32	102
2006	147.6	85	43	136
2007	80.7470588235294	85	35	142
2008	91.5529411764705	85	39	139
2009	72.3647058823529	85	30	130
2010	73.1882352941176	85	31	82
2011	76.3176470588235	85	33	93
2012	76.5176470588235	85	30	138
2013	78.7960784313725	85	35	131
2014	77.1274509803921	85	31	126
2015	76.3176470588235	85	29	147