Andy Lundgren sent out an inquiry via email about lines at 1180 Hz and 1150 Hz. I looked for these lines in the coherence tool, and I didn't see any evidence of the 1180 Hz line, but I did find a very sharp line at 1150 Hz on the following channels:

H1:LSC-MCL_OUT_DQ
H1:LSC-MICH_OUT_DQ
H1:LSC-PRCL_OUT_DQ
H1:CAL-CS_CARM_DELTAF_DQ
H1:CAL-CS_IMC_DELTAF_DQ
H1:CAL-CS_MICH_DQ
H1:CAL-CS_PRCL_DQ
H1:CAL-CS_SRCL_DQ
H1:LSC-DARM_OUT_DQ
H1:LSC-REFL_SERVO_CTRL_OUT_DQ
H1:OAF-CAL_CARM_AO_DQ
H1:OAF-CAL_CARM_X_DQ
H1:OAF-CAL_MICH_DQ
H1:OAF-CAL_PRCL_DQ
H1:OAF-CAL_SRCL_DQ

If you want to look for yourself, you can find the full coherence tool output for the May 2 locks here:
https://ldas-jobs.ligo-wa.caltech.edu/~nathaniel.strauss/HIFOX/LineSearch/H1_COH_1114579968_1114784433_1000_webpage/