I found a small mistake in the HAM_gain_matching_calculation script.
The Q of the GS13 model was wrong by a factor a few, causing a slight phase delay around the frequencies that matter for the sensor correction ([0.1Hz-0.4Hz]). The overall amplitude was thus altered.
This has been fixed and committed into the SVN:
/ligo/svncommon/SeiSVN/seismic/HAM-ISI/Common/Misc/HAM_gain_matching_calculation.m
Here's the correct values that we have so far (I though we had done HAM2 as well, but I can't find a good set of data):
| HAM4 | HAM5 | HAM6 | |
| X | 0.945 | 1.001 | 1.035 |
| Y | 0.929 | 0.991 | 1.027 |
| Z | 0.918 | 1.039 | 1.103 |
We still need to do HAM2&3, plus all the BSCs. Don't forget to put the ISI in high blend mode with sensor correction OFF when you want to calculate the gain.