File naming convention:

  ha1<approximate depth>.dat

  (ex.  ha190.dat is the thermister located ~90m)

  There are 10 thermisters at approximately 2, 38, 50, 60, 80, 90, 100,
  120, 130 & 150m.


File format:

  Column	Item
  
     1		Year
     2		Month
     3		Day
     4		Hour
     5		Temperature (Deg C)