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Observatory List and IAGA Code
Observatories
IAGA Code
Data Resolution
Barrow
BRW
HR
Year
J
F
M
A
M
J
J
A
S
O
N
D
1964
1
1
1
1
1
1
1
1
1
1
1
1
1965
1
1
1
1
1
1
1
1
1
1
1
1
1966
1
1
1
1
1
1
1
1
1
1
1
1
1967
1
1
1
1
1
1
1
1
1
1
1
1
1968
1
1
1
1
1
1
1
1
1
1
1
1
1969
1
1
1
1
1
1
1
1
1
1
1
1
1970
1
1
1
1
1
1
1
1
1
1
1
1
1971
1
1
1
1
1
1
1
1
1
1
1
1
1972
1
1
1
1
1
1
1
1
1
1
1
1
1973
1
1
1
1
1
1
1
1
1
1
1
1
1974
1
1
1
1
1
1
1
1
1
1
1
1
1975
1
1
1
1
1
1
1
1
1
1
1
1
1976
1
1
1
1
1
1
1
1
1
1
1
1
1977
1
1
1
1
1
1
1
1
1
1
1
1
1978
1
1
1
1
1
1
1
1
1
1
1
1
1979
1
1
1
1
1
1
1
1
1
1
1
1
1980
1
1
1
1
1
1
1
1
1
1
1
1
1981
1
1
1
1
1
1
1
1
1
1
1
1
1982
1
1
1
1
1
1
1
1
1
1
1
1
1983
1
1
1
1
1
1
1
1
1
1
1
1
1984
1
1
1
1
1
1
1
1
1
1
1
1
1985
1
1
1
1
1
1
1
1
1
1
1
1