DIFB_TEMPS
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o Mention in the dataset.cat that all temperatures are in degrees Celsius.

o MISSING_CONSTANT value should be changed to "-999.999" from "1.E32".

o Change the definition of the first column in the temperature tables to 
  indicate that the first column is, in fact, the day-of-year and fractional
  day.  Also mention the actual year.

o If possible, add diagram(s) showing where the sensors were located.

o Stephanie and Don H. will consult and make sure the tables we have are the
  20-minute average tables we were expecting.

o Consider adding simple plots to the documentation directory showing the
  temperature profile for each sensor or group of sensors.

o In the catinfo.txt file, the HRII.CAT file refers to the MRI, and the
  file for MRI is not included at all.