Plotted entries from OPSLOG files in CRIRES report FLATSTAB, plot 2 (data set plt_par2):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS      	values
====================================================
2012-02-05	55963.453004	166.544445800781
2012-02-06	55964.370248	163.163891601563
2012-02-07	55965.382419	149.517211914062
2012-02-08	55966.381209	150.022497558594
2012-02-09	55967.869361	151.955004882812
2012-02-10	55968.456596	162.777502441406