Plotted entries from OPSLOG files in FORS2 report LSS_lambda_c, plot 1, data set parC1:

DATE       MJD-OBS      parameter values
==========================================================================
2008-11-18 54788.428100 5868.6044921875	parC1
2008-11-19 54789.392579 5868.8349609375	parC1
2008-11-20 54790.371929 5868.69580078125	parC1
2008-11-21 54791.385250 5868.93994140625	parC1