Precision and Accuracy (P & A), formerly Precision and Accuracy Reporting System (PARS), is a utility that allows administrative personnel to create data records that are used later to submit RA (accuracy) and RP (precision) records to the Air Quality System (AQS). P&A is collected to ensure that data collected at monitoring sites is of high quality. Systems of checks produce data that reflects the results of these evaluations. Data edited in the PARS Editor will not be published on the public website; the PARS Editor is a tool for administrative access only.