Plotted entries from OPSLOG files in VIMOS report BIASLEV, plot 8, data set parQ4hi:

DATE       MJD-OBS      parameter values
==========================================================================
2008-08-24 54702.693994 194.	parQ4hi
2008-08-25 54703.449353 194.	parQ4hi
2008-08-26 54704.461857 194.	parQ4hi
2008-08-27 54705.461071 194.	parQ4hi
2008-08-28 54706.478238 194.	parQ4hi
2008-08-29 54707.435663 194.	parQ4hi