Plotted entries from OPSLOG files in FORS1 report BIAS_ron_raw, plot 2, data set parC2hm:

DATE       MJD-OBS      parameter values
==========================================================================
2008-11-19 54789.405851 4.37432905558295	parC2hm
2008-11-20 54790.402879 4.38819009274445	parC2hm
2008-11-21 54791.398897 4.35003335976113	parC2hm
2008-11-21 54791.414684 4.35598069800844	parC2hm
2008-11-22 54792.517168 4.3842568046258	parC2hm
2008-11-23 54793.394450 4.38791055228618	parC2hm
2008-11-24 54794.397766 4.38667494768271	parC2hm
2008-11-24 54794.412266 4.38113027240814	parC2hm
2008-11-26 54796.394837 4.3757318861395	parC2hm
2008-11-27 54797.377491 4.3835201140377	parC2hm
2008-11-27 54797.406517 4.38108906711823	parC2hm
2008-11-29 54799.423734 4.38138307381318	parC2hm