SysTim        int(8)  deci-microseconds since midnight on 17-Nov-1858 AEST
Record_No     int(2)  = # of 20-secs since midnight + 1
WndSpdMax     int(2)  km/h
WndSpdAvg     int(2)  km/h
WindDir       int(2)  degrees [0..540]
AirPress      int(2)  millibars (hectopascals)
RainBuckets   int(2)  tips in the preceeding 20 seconds - 1 tip = 0.2mm
RelHumid      int(2)  %
OutTemp       int(2)  degrees-celsius
InTemp        int(2)    "
MaserTemp     int(2)    "
CbnTemp       int(2)    "
ExtrTemp      int(2)    "