Plotted entries from OPSLOG files in FORS2 report BIAS_ron_raw, plot 2, data set parC2hm:

DATE       MJD-OBS      parameter values
==========================================================================
2008-11-18 54788.394476 4.88670679151892	parC2hm
2008-11-19 54789.388601 4.87354276666472	parC2hm
2008-11-19 54789.757297 4.9964842785768	parC2hm
2008-11-19 54789.760792 5.02064425117807	parC2hm
2008-11-19 54789.888860 4.86493862854988	parC2hm
2008-11-20 54790.382118 5.01112539294429	parC2hm
2008-11-20 54790.874705 4.9567990161015	parC2hm