Daily Means, Monthly Means and Extremes

Data Format

Digital Daily Means, Monthly Means and Monthly Instantaneous Extremes data are available in standard 80-character length record format, with missing data represented by 9's, as follows:

SAMPLE:
---------0---------0---------0---------0---------0---------0---------0---------0
-    65 1919 7      SAINT JOHN                  N B         4516 6603      AST  
5    65 1919 7 110        424  436  446  454  448  443  436  429  424  428      
5    65 1919 71120        434  426  418  417  416  420  419  426  429  436      
5    65 1919 72131  4310  436  442  434  431  426  420  418  431  436  436  438 
6    65 1919 7     9999999999999999999999                                       
HEADER RECORD:
BYTE            DESCRIPTION
----            -----------
1               1 character field, data code, minus sign
2               blank
3-7             5-digit integer, right-justified, unique station 
                identification number
8               blank
9-12            4-digit integer, year
13-14           2-digit integer, month
15-20           blank
21-52           32 character field, station identification name
53-59           blank
60              1-digit integer, code - 1 elevation in 1/100 feet
                                        2 elevation in centimeters
61-64           4-digit integer, latitute in degrees and minutes
65-69           5-digit integer, longitude in degrees and minutes
70              blank
71-75           bench mark elevation
76-78           3 character field, time zone
79              datum code
DATA RECORD - DAILY MEANS:
BYTE            DESCRIPTION
----            -----------
1               1 character field, card code, 5 or N
2               blank
3-7             5-digit integer, right-justified, unique station 
                identification number
8               blank
9-12            4-digit integer, year
13-14           2-digit integer, month
15-16           2-digit integer, day of first record on the line
17-18           2-digit integer, day of last record on the line
19-24           6-digit integer, monthly mean (on third dm data line only) 
                in millimeters
25-29           5-digit integer, daily mean for 1st, 11th or 21st day in 
                centimeters unless indicated by card code 1 in position 60
                of header record
30-34           5-digit integer, daily mean 
DATA RECORD - MONTHLY EXTREMES:
BYTE            DESCRIPTION
----            -----------
1               1-digit integer, card code 6
2               blank
3-7             5-digit integer, right-justified, unique station 
                identification number
8               blank
9-12            4-digit integer, year
13-14           2-digit integer, month
15-19           blank
20-21           2-digit integer, day of instantaneous high
22-25           4-digit integer, time in HHMM of instantaneous high
26-30           5-digit integer, elevation in centimeters of high
31-32           2-digit integer, day of instantaneous low
33-36           4-digit integer, time in HHMM of instantaneous low
37-41           5-digit integer, elevation in centimeters of low