Year = 1998 Month = March Day = 05 Day-of-year = 064 Site = Poker Flat Sunrise = 16:50 Sunset = 03:12 Moonrise = 19:22 Moonset = 12:53 Moon_age = 7 Aurora = Active - One or more breakups occurred Cloud = Extremely clear all night Magnetometer = Disturbed ASC = Short moondown, ran OK MSP = Ran all night but several channels failed VHF_radar = Good data coverage for the entire 24 hours Electrojet = Good data coverage from real-time calculations (typically 5 minute intervals) SDI = Ran all night, good data Bomem = Unknown MSG = No data Trailer = No data UW_FPI = Ran all night, good data Stratosperic_lidar = Unknown Rayleigh_lidar = Unknown Resonance_lidar = Unknown Ebert = No data Comments = Entry at 18:55 UT, MC. SDI data show weak confused winds at and after magnetic midnight (no sign of the usual cross-polar jet). There is no obvious reason to suspect the observations are incorrect, however. I plotted the individual spectra with SDI_XYPL.PRO and they all look good. Lots of moonlight background early in the night, but by magnetic midnight the signal was strong and the background was down. (A similar result was obtained on March 02.) Updated, 03-10-98, 05:45 UT, MPK.