H1 12/3 - 12/6 Detchar Data Quality Shift Report Summary. Full shift report here: https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20151203

• Duty Cycle ~62% for the 4 days, ~80 Mpc for all 4 days.
• Looks like lots of low frequency scattering on several days, especially in latter half of UTC day.
• Unable to determine lock-loss cause for several losses.
• IFO had to ride out high wind states a few times, lowering overall duty cycle.
• Sometimes issues with alignment slowed down locking process (see alog links below).
• Wandering line at 650Hz still intermittent, forest of low-frequency lines seen in FScans.
  • Stochmon showng a few coherent lines between sites between 20-40Hz; a few calibration related, a few not. Weekly coherences show, specifically, ~25Hz and ~42Hz coherent lines. More in cumulative integrated plots. Line here: https://ldas-jobs.ligo.caltech.edu/~thomas.callister/stochmonO1/stochmon.html
• General ISI issues in several HAMs specifically (several alogs about this over the weekend).
• Microseism has been consistently high throughout the weekend. Especially the last day or so.