Tonight magnetic injections at CEB were repeated. With respect to previous injections performed on July 1st, this time the boby coil axis is oriented along N-arm. Figure 1

Form a quick look it seems that magnetic injections were ok. In the sense that a bit more than one cycle was performed before ITF unlocked, just injections at frequencies 89Hz and 140Hz look compromised because of drops in sensitivity. Figure 2.

The log file is attached.

I attach also a few spot plots for injections at 39Hz, 71Hz, and 134Hz (respectively Figures 3, 4 and 5). In all three cases the injected line is well visible in the three magnetometers and in hrec. The ratio between excess noise in magnetometers and in hrec looks at least a factor 30.