Column  Fmt  Description
-------------------------------------------------------------------------------
  1-  3   A3  Index Name 'DST'.
  4-  5   I2  Year (last 2 digits).
  6-  7   I2  Month.
  8       A1  *=index
  9- 10   I2  Day.
 11- 12   A2  Blanks or may be "RR" for quick look.
     13   A1  'X'
     14   A1  Version:
              0 - quicklook;
              1 - provisional;
              2 - final; 
              3 and up - corrected final or may be space.
 15- 16   I2  Top two digits of the year (19 or space for 19XX, 20 from 2000).
 17- 20   I4  Base value, unit 100 nT.
 21-116 24I4  24 hourly values, 4 digit number, unit 1 nT. 
              First data is for the first hour of the day, 
              and last data is for the last hour of the day.
              Value 9999 for the missing data.
117-120   I4  Daily mean value, unit 1 nT. 
              Value 9999 for the missing data.