The first hour of the night was lost to continued high humidity, but then
the humidity backed off to just under 90% and observations began in earnest for Campaign 64. The seeing was 1 arcsec or better for the entire night and the sky stayed clear enough until the last hour and a half of the night for photometry to be obtained along with spectropolarimetry. About a dozen blazars were observed. The last hour of the night was lost to clouds.
