The data here are from the IVM "Survey" Mode, in the years supplied.
They were reduced with a "quick-look" approach which is described
in Leka & Barnes 2007.  Statistically they can be used in a quantitative
manner.  Each individual magnetogram may, however, have a host of
artifacts and there are systematic reductions in field strength
and possibly some magneto-optical effects.

All files are FITS files, although they may be gzipped.

The "raw" magnetograms are those which begin "IMGM...", meaning
that they are ambiguous in the observed transverse component,
and in some cases may have pointing errors, and in addition
may be complete junk.  Those files with "J..." have been
screened somewhat, bad pointing errors fixed, trimmed of edge
effects, and ambiguity-resolved using the UH iterative method
and an automated "best-alpha" approach (see Metcalf et al 2006).
The ambiguity resolution was done automatically -- again, in a statistical
sense these data are fine, although quibbling with any particular point
is allowed (I'm just not going to do that).

The data were obtained at the U. Hawai`i Mees Solar Observatory by the
Imaging Vector Magnetograph.  They were processed to produce the "J..."
files by K.D. Leka with funding by AFOSR and NSF.  Permission to use these
data in scientific analysis will be fairly automatic, although request
for permission and appropriate acknowledgements would be appreciated.
In particular, please acknowledge the staff of U. Hawaii Mees Solar Observatory,
Air Force Office of Scientific Research contract F49620-03-C-0019,
and include the following paragraph:
"This material is based upon work supported by the National Science Foundation under Grant No. 0454610.
Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s)
and do not necessarily reflect the views of the National Science Foundation (NSF)."