About Sample_mean_db
Sample_mean_db is an optional analysis export variable available in exported integration analyses.
It reports the sample mean, expressed in dB, in the analysis domain or interval that was analyzed. For TS, Power dB, and Unspecified dB operands, Echoview calculates the arithmetic mean of the included sample values' linear equivalents and converts the result to dB.
This variable is exported only if it is selected on the Export page of the EV File Properties dialog box.