As title says, documentation for the XGAIN command (in all 3 stations) is missing some return values. The following extract is from the doc:
XGAIN target avlon avlat lonampl lonampl_err latampl (cont.)
latampl_err lonFWHM lonFWHM_err latFWHM latFWHM_err (cont.)
flux lonflag latflag
Where the last line should be:
lonTsys latTsys flux lonflag latflag
as it is shown in the 1149th line of the following file:
https://github.com/discos/discos/blob/master/Common/Servers/CalibrationTool/src/EngineThread.cpp#L1149