Figure 1. This morning around 6.30 UTC I have put back the SR TX offset to 0.015 the value we have been using from August to October to increase the BNS range (have a diagonal SR misalignment instead of a purely SR TY one). This has worked as in the past, B1p decrease and the BNS range has increase by 5Mpc, but made the frequency noise coupling worse.

Note that BS TX control should be put back to high bandwidth, to have a more robust interferometer, and reduce the flucutation in the frequency noise coupling.