CLIMAT Data Format (FM71)
Monthly Climatological Data
Table of Contents
Syntax
CLIMAT MMJJJ IIiii
111 1PPPP 2pppp
3sTTTsss 4sXXXsNNN 5eee
6RRRRdnn 7SSSppp 8ppttxx
9eerrss
222 0YYyy 1PPPP 2pppp
3sTTTsss 4sXXXsNNN 5eee
6RRRRnn 7SSS 8ppttxx
9eerrss
333 0TTtt 1TTtt 2TTtt
3RRrr 4RRrr 5RRrr
6SSss 7SSss 8FFffFF
9VVvvVV
444 0sXXXyy 1sNNNyy
2sXXXyy 3sNNNyy 4RRRRyy
5iFFFyy 6DDdd 7iGGgg
000 Group

MM
The month of the year.
JJJ
The last 3 digits of the year 1994=994

IIiii
The WMO number of the station.
111 Group  General Monthly Data

1PPPP
The mean sea level pressure (.1mb) 
2pppp
The mean station pressure (.1mb) 
3sTTT
The mean temperature (.1C,  for S=1)
sss
The standard deviation (.1C) 
4sXXX
The maximum temperature (.1C,  for S=1)
sNNN
The minimum temperature (.1C,  for S=1) 
5eee
The mean vapor pressure (.1mb) 
6RRRR
The liquid precipitation (mm)
d
Comparison to normal0 less than any value in last 30 years 1 in 1st quintile 2 in 2nd quintile 3 in 3rd quintile (roughly normal) 4 in 4th quintile 5 in 5th quintile 6 greater than any value in last 30 years
nn
The number of days it measured >= 1 mm. 
7SSS
The number of hours of sunshine (hours)
nnn
Precent of normal 
8ppttxx 9eerrss
The number of missing observations in each group.
222 Group  Climatological Averages

0YYyy
The start and end year. 
1PPPP
The mean sea level pressure (.1mb) 
2pppp
The mean station pressure (.1mb) 
3sTTT
The mean temperature (.1C,  for S=1)
sss
The standard deviation (.1C) 
4sXXX
The maximum temperature (.1C,  for S=1)
sNNN
The minimum temperature (.1C,  for S=1) 
5eee
The mean vapor pressure (.1mb) 
6RRRR
The liquid precipitation (mm)
nn
The number of days it measured >= 1 mm. 
7SSS
The number of hours of sunshine (hours) 
8ppttxx 9eerrss
The number of missing years in climatological mean for each group of data.
333 Group  Number of Days during Month Event Occurred

0TT
The number of days temp >= 25C
tt
The number of days temp >= 30C 
1TT
The number of days temp >= 35C
tt
The number of days temp >= 40C 
2TT
The number of days T_{min} <= 0C
tt
The number of days T_{max} <= 0C 
3RR
The number of days prec >= 1mm
rr
The number of days prec >= 5mm 
4RR
The number of days prec >= 10mm
rr
The number of days prec >= 50mm 
5RR
The number of days prec >= 100mm
rr
The number of days prec >= 150mm 
6SS
The number of days snow >= 0cm
ss
The number of days snow >= 1cm 
7SS
The number of days snow >= 10cm
ss
The number of days snow >= 50cm 
8FF
The number of days wind speed >= 20knt
ff
The number of days wind speed >= 30knt
FF
The number of days wind speed >= 40knt 
9VV
The number of days visibility <= 50m
vv
The number of days visibility <= 100m
VV
The number of days visibility <= 1000m
444 Group  Extremes and Day it Occurred

0sXXX
The maximum daily mean temp (.1C,  for S=1)
yy
The day which it occurred 
1sNNN
The minimum daily mean temp (.1C,  for S=1)
yy
The day which it occurred 
2sXXX
The maximum monthly temp (.1C,  for S=1)
yy
The day which it occurred 
3sNNN
The minimum monthly temp (.1C,  for S=1)
yy
The day which it occurred 
4RRRR
The maximum daily rainfall
yy
The day which it occurred 
5i
The wind type and unit:0 m/s estimated 1 m/s anemometer 2 knt estimated 3 knt anemometer
FFF
The maximum wind speed (whole units)
yy
The day which it occurred 
6DD
The number of days with thunderstorms
dd
The number of days with hail/graupel