Note: This information is provided for reference purposes only. Although the information provided here was accurate and current when first created, it is now outdated. |

This web site provides query access to over 200 million monitoring records originally reported to EPA via the Legacy STORET System. |

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Composite Statistic
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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 | |||||||||||