Composite Statistic
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
This web site provides query access to over 200 million monitoring records originally reported to EPA via the Legacy STORET System.
Code | Name | Performance Type Ind | Print Format |
---|---|---|---|
A | Average | N | AVE |
H | Maximum | N | MAX |
L | Minimum | N | MIN |
N | Number of Observations for the Sample | N | NUM |
S | Standard Deviation | N | SD |
U | Sum of Squares | N | SS |
V | Variance | N | VAR |
C | Coefficient of Error | N | COF |
X | Coefficient of Variance | N | COV |
E | Skewness | Y | SKW |
F | Kurtosis | Y | KUR |
Z | Number of Samples in Composite Exceeds Established Limit | N | EXC |
% | Precision | Y | PRE |
$ | Accuracy | Y | ACC |
B | None of the Above | N | |
D | Indicates Replicate Sample | N | REP |