More polarization darkening early in the day.  Appears in roughly
one area of the image so it is possible that it is not the sky 
conditions this time.  Will ask Andy about emailing David and Kim
about this to see if there is anything in the way at this time of
day.

Many images show 'shimmering rays' which are probably due to the
spar being jiggled around as David and Kim work on it.
The average image for the day contains these rays so I am placing
this day in the poordata directory.

Appended 4/26/99
  I found out that the rays mentioned above are due to electronic
  noise in the instrument.  Further, pixels 106-111 were saturated
  by a procedure known as Correct which sets the bias and gain for
  each diode.  This prcedure was run on the MKIV instrument but
  it seemed to effect the MKIII as well.  This noise and saturation
  continued throughtout the weekend.

There is a data gap from 18:31-20:40 UT while work on MKIV is
done.

Tony