12 2 OBSERVED MINUS MAXIMUM
23 3 OBSERVED MINUS MINIMUM
34 4 OBSERVED MINUS MEAN
45 5 OBSERVED MINUS MEDIAN
56 6 OBSERVED MINUS MODE
611 11 OBSERVED MINUS CLIMATOLOGY (ANOMALY)
712 12 OBSERVED MINUS ANALYZED VALUE
813 13 OBSERVED MINUS INITIALISED ANALYZED VALUE
914 14 OBSERVED MINUS FORECAST VALUE
1021 21 OBSERVED MINUS INTERPOLATED VALUE
1122 22 OBSERVED MINUS HYDROSTATICALLY CALCULATED VALUE
1232 32 OBSERVED MINUS FIRST GUESS
1333 33 OBSERVED MINUS ANALYSIS
1434 34 OBSERVED MINUS INITIALIZED ANALYSIS
1563 63 MISSING
16