Plotted entries from OPSLOG files in VISIR report SENS, plot 1 (data set sens_sP):
(DATE changes at 21:00 UT or MJD-OBS = xxx.875)
DATE       	MJD-OBS      	values
====================================================
2012-01-28	55955.016936	6.64498189473291
2012-01-28	55955.018740	6.48877453773054
2012-02-02	55960.209851	3.15912398582397
2012-02-02	55960.214434	3.28913928421763
2012-02-03	55961.141888	4.1945480299281
2012-02-03	55961.144065	4.078421964299
2012-02-03	55961.146287	4.34656476874317
2012-02-03	55961.148508	6.09276214919194
2012-02-04	55962.034296	5.5003954148819
2012-02-04	55962.036565	5.2187716983179
2012-02-04	55962.038879	6.58567337199066
2012-02-04	55962.208045	4.22971198961901
2012-02-04	55962.210222	4.32628263459161
2012-02-04	55962.216611	3.9864747198045
2012-02-04	55962.218740	4.00735546264545
2012-02-04	55962.223879	4.28574575020022
2012-02-04	55962.229991	4.48086883290992
2012-02-04	55962.233323	5.25087431497628
2012-02-04	55962.235685	5.29230027709418
2012-02-04	55962.241981	7.1613356579522
2012-02-04	55962.244158	9.272866150027
2012-02-04	55962.246889	10.2172398426673
2012-02-04	55962.249945	14.1185813774716
2012-02-05	55963.208000	4.34446524155903
2012-02-05	55963.210221	4.10749239418822
2012-02-05	55963.212444	4.16308522734084
2012-02-05	55963.214667	5.58324811564908
2012-02-05	55963.251194	7.88900687122233