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Mission01,
When the same thresholds are applied to this mission, 
the reflectivities at z=0,1 are just to high and so aligned
with the aircraft track that they look so unrealistic. Hence,
we can not trust them. The following command illustrates this point:

gunzip -c < m01-010903-c.dat.gz | plot-dbz.ss && pgx

In order to see if a special set of thresholds solve the situation,
I've performed several tests using different kinds of thresholds.
The results are in directory DbzTest. They indicate that
the problem with reflectivity can not be deal with through
special set of thresholds. Therefore, I have stopped the analysis 
of this mission until I think of an alternative solution.