Level 2 Help for FIT3D

The input data set. It may be byte, half, integer, or real; it may be BIL,
BSQ, or BIP.

The output data set or sets.  If the keyword ALL is used, then the output is a
single dataset rescaled into byte format, containing all the bands of the input
dataset.  If the BYCHAN mode (the default) is used, each band processed is 
placed into its own dataset.  The number of output datasets determines the 
number of bands that will be processed.  The maximum number of output datasets
is 32.

Rescaling mode. Use ALL if all bands are to have a single set of scaling 
limits.  Do not use ALL if you wish each band to be scaled individually.

If specified, this parameter sets the number of standard deviations from the 
mean spanned by the output scaling limits.  If this parameter is defaulted,
the statistics are ignored, and the scaling limits are set to the minimum and
maximum pixel values.

This parameter sets the starting band to be processed, if not all bands are to
be used.  SB is incompatible with the ALL mode, and if both are specified SB is
ignored.

Statistics are gathered using only every n'th line and n'th sample of the
image. If different line and sample increments are desired, use LINC and
SINC parameters.

Statistics are gathered using only every n'th line of the image. 

Statistics are gathered using only every n'th sample of the image. 

A pixel is excluded from use in determining the mean and standard deviation
if the EXCLUDE keyword is used.