Actually this is for the past two weeks. The variation in the frontend laser's pump diode output power coincides with a dip in the relative humidity in the diode room. Not surprisingly the relative humidity change is also indicated by the sensor inside the high power oscillator. If this signal was used as an alarm, which was intended to detect the suspicion of a water leak, the laser would have been automatically shut down. Everything else looks nominal with the only exception being related to the site-wide power glitch.