The submission rate is the number of precision points submitted for a pollutant divided by the expected number of bi-weekly submissions. Precision checks for non-continuous, collocated particulate samplers are done every 6th day. Submission rates are adjusted for verified analyzer non-operating time periods. Data validity is based on the percent difference of the actual and indicated values of each precision check. If data have been submitted and placed on the databank and deleted as a result of a subsequent AQDA the data are counted as a submission point but not as a valid precision check.
Usable data is the product of submission and validity rates.
To get precision data results for a particular site, click here.