Link to report.

• The duty factor for the week was 15.43%, much lower than previous weeks. Locking problems persisted for the second half of the week (see, e.g., alog 78308). It was better in the first couple of days, at 51.91% and 38.43%, but dropped substantially thereafter. No observing data was taken from Friday through Sunday.
• The week started with a wind advisory in the region with wind gusts in excess of 25mph some times. Winds were partially responsible for lockloss and caused difficulties in maintaining lock. The wind speed was around 10 m/s or less on June 2 (UTC) but increased to as much as 17.5 m/s around 15:45hrs UTC on June 3. June 4 also remained windy; while it ebbed in the night hours, it climbed back up in the day hours to as high as 18.5 m/s by 18:00 UTC. The wind finally slowed down to below 10m/s around 4:00 UTC on June 5 and did not rise above that for the rest of the week.
• June 5 onward the duty factor remained below 10%, while several commissioning / troubleshooting exercises attempted to get the detector to maintain lock / relock.
• "Whistle" glitches in SQG FC WFC were associated with range drops in a couple of instances, as has been observed in May too -- in this alog 78263. A drop in the relative vacuum in H1:SQZ DC PhotoDiode sum/null ratio BLRMS was also found to have some correlation with range drops.
• Low-frequency (10-50Hz) noise in the IMC spectrogram appears to be correlated with high SNR glitches in Omicron (especially, on June 3).
• Hveto: 12 channels appeared in Hveto this week of which 8 were not seen in the previous week.
• FScan: Plots from June 3 seem to be missing. All plots have appeared for June 4 – 6, for which the line counts are 656, 267 and 291, respectively.