Year = 1998
Month = April
Day = 27
Day-of-year = 117
Site = Poker Flat
Sunrise = 13:33
Sunset = 06:01
Moonrise = 14:49
Moonset = 06:31
Moon_age = 0
Aurora = Very Quiet - Faint arcs visible at times, far to the north
Cloud = Variable, but generally poor
Magnetometer = Disturbed
ASC = Summer season, did not run
MSP = Ran all night but several channels failed
VHF_radar = Good data coverage for the entire 24 hours
Electrojet = Unknown
SDI = Ran all night, fair data
Bomem = No data
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 12:40, MC.
Too cloudy for good SDI winds. 
The cloud was thin enough that some wind info got through,
particularly later in the run. But the wind fields are generally
weak and confused, indicative of cloud.
Temperatures are fine...great actually.  I worked on the SDI all
afternoon.  Main jobs were re-mounting the filter away from the intensifier
housing (so it does not get so cold), decrease intensifier gain but now
Updated, 05-01-98, 06:00 UT, MPK.
integrate 3 video frames (rather than 2) per etalon step, and lots of focus
and parallelism tweaking.  The results are more signal, less noise, and 
significantly narrower fringes.  So despite weak emissions and cloud, I
have really nice temperatures.  No info about the variation across the sky
of course - due to the cloud.  But temporal variation should be good.