Plotted entries from OPSLOG files in VIMOS report SLOPE_HRo, plot 4, data set parslQ4:

DATE       MJD-OBS      parameter values
==========================================================================
2008-11-19 54789.583793 -0.000499083386669093	parslQ4
2008-11-20 54790.568157 -0.000207769866276172	parslQ4
2008-11-21 54791.660053 -0.000534238888618121	parslQ4
2008-11-22 54792.612165 -0.00015296847860506	parslQ4