Plotted entries from OPSLOG files in CRIRES report FLATSTAB, plot 3 (data set plt_par3):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS      	values
====================================================
2012-02-05	55963.454363	403.325
2012-02-06	55964.371608	400.822509765625
2012-02-07	55965.383780	386.538598632813
2012-02-08	55966.382568	380.752783203125
2012-02-09	55967.870689	385.489990234375
2012-02-10	55968.457926	396.86279296875