About Gain_constant
Gain_constant is an analysis export variable available in exported integration analyses.
It reports the value of Echosounder constant displayed on the Calibration page of the Variable Properties dialog box for the variable which was analyzed (dB re 1m2/m3).
This variable is exported only if it is selected on the Export page of the EV File Properties dialog box.
Note: This variable applies to variables derived from EchoListener data files only.