Dist_S is an analysis export variable.
It reports the distance (measured by GPS) from the first ping in the analyzed variable to the first ping in the domain which was analyzed (S for Start).
This variable is exported only if it is selected on the Export page of the EV File Properties dialog box.
Note: The exported distance unit is specified on the Grid page of the Variable Properties dialog box for the variable.
About analysis
About analysis variables
About ping position
About Dist_E
About Dist_M
About VL_End
About VL_Mid
About VL_Start