Investigation notebooks updated!

My vertical velocity investigation notebooks for 25 April and 20 May
2011 were updated to now look at the new pickled data that includes the
smoothing of vertical velocities by a boxcar IRF in height as well as
time.
Regression notebooks using updated data!

My reflectivity and vertical velocity regression notebooks are now using
the new pickled data which includes smoothing the data in height using a
boxcar IRF!