Running annual average means the sum of 1, 2, 3 or 4 calendar quarter sample results divided by 4. The first sample may be the average of the initial and confirmation sample results. If more than 4 calendar quarters of samples have been collected in more than 4 consecutive calendar quarters, the results from the 4 most recent quarters shall be used. If multiple compliance samples are collected in a single calendar quarter, the sample which yielded the highest concentration shall be used to calculate the running annual average.
Running annual average means the sum of the consecutive 12-month contaminant sample values divided by the total number of samples taken at one sample point. (Example: (Σx1+ x2+ xn)/n = Running Annual Average)
Running annual average means the arithmetic average of the concentrations of all the most recent samples taken covering a 365 day period;
Examples of Running annual average in a sentence
Running annual average based on monthly samples collected December 1998 through August 2007 adjusted for the average initial dilution of 294:1.
Running annual average will be calculated after four consecutive quarters of samples have been collected by third quarter 2004.