Plotted entries from OPSLOG files in FORS2 report BIAS_ron_raw, plot 4:

DATE       MJD-OBS      parameter values
==========================================================================
2008-11-24 54794.369457 3.02807234147981	parC2lm
2008-11-24 54794.380013 3.03568889683224	parC2lm
2008-11-25 54795.387621 3.07204362712232	parC2lm
2008-11-26 54796.405351 3.09918346519243	parC2lm
2008-11-27 54797.370226 3.05261295588534	parC2lm
2008-11-27 54797.371576 3.0336806973972	parC2lm
2008-11-28 54798.378642 3.06473921412114	parC2lm
2008-11-30 54800.377693 3.08220696280746	parC2lm
2008-12-01 54801.379165 3.13086510311922	parC2lm
2008-12-03 54803.374583 3.11978763955698	parC2lm
2008-12-03 54803.385209 3.12431844215003	parC2lm