Year = 2016 Month = April Day = 21 Day-of-year = 112 Site = South_Pole Sunrise = 13:53 Sunset = 05:43 Moonrise = 03:58 Moonset = 14:24 Moon_age = 14 Aurora = Quiet - Arcs clearly visible, but mostly north of zenith Cloud = Clear early, overcast later Magnetic_Activity = Unknown ASC = Unknown KEO = Unknown SDI = Ran all night, very good and very interesting data Comments = We recorded around 81,000 SDI spectra at 630 nm.The sky looks clear, and the data are very interesting. Mark Conde, April 2016