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Values

Phenomena occurrence

Code/Flag Figure	Description	Status
1	At time of observation	Operational
2	In past hour	Operational
3	In time period for past weather W1W2	Operational
4	In time period specified	Operational
5	Reserved	Operational
6	Below station level	Operational
7	At the station	Operational
8	In the vicinity	Operational
All 9	Missing value	Operational