Performances of the ETMX and ITMX ISI were consistent between yesterday evening and this evening, cf the first two attached plots. Although, the ground motion was not that different (cf comparison of the seismometers in PEM_CS and PEM_EX).
First two attachements are showing a comparison of oplev Pitch and ST2 GS13 for ITM and ETM
yesterday night in green (gps 1076202015 2014-02-12 01:00:00 UTC)
this evening in red (gps 1076301556 2014-02-13 04:39:01 UTC)
Last two attachements are a comparison of the seismometers in Corner station and End X
yesterday night in red (gps 1076202015 2014-02-12 01:00:00 UTC)
this evening in blue (gps 1076301556 2014-02-13 04:39:01 UTC)
I added to yesterday's plot the motion of the ground and ISI from this morning (gps 107636178), in a noisier environment (between 0.5Hz and 8Hz and below 0.1Hz, due to wind ?), see green curve in the PEM signals (PEM_EX PEM_CS) and pink curve in ISI signals (ITMX_perf and ETMX_perf).
