Tuesday 29 September 2015 John and Gately replaced the vibration isolators on end instrument air compressors. So here I follow up the correlation between the glitches and the EX_SEIS_VEA_FLOOR_[X,Y,Z]_DQ commented by Joshua (21470). I have analyzed data from the 09/29 10.00 UTC before the repair and the glitches are totally visible. The data after the repair 09/30 10.00 UTC shows no trace of the glitches. I attach two images to show these.