1960 01 33.09 -99.99 -99.99 
1960 02 32.20 -99.99 -99.99 
1960 03 32.40 -99.99 -99.99 
1960 04 33.59 -99.99 -99.99 
1960 05 33.90 -99.99 -99.99 
1960 06 33.80 -99.99 -99.99 
1960 07 31.80 -99.99 -99.99 
1960 08 32.20 -99.99 -99.99 
1960 09 30.90 -99.99 -99.99 
1960 10 31.80 -99.99 -99.99 
1960 11 32.30 -99.99 -99.99 
1960 12 32.59 -99.99 -99.99 
1965 01 29.30  20.29  24.80 
1965 02 30.10  20.80  25.45 
1965 03 30.70  21.30  26.00 
1965 04 31.50  21.20  26.35 
1965 05 31.70  21.90  26.80 
1965 06 31.10  21.50  26.30 
1965 07 31.20  20.90  26.05 
1965 08 30.80  20.40  25.59 
1965 09 31.00  22.20  26.60 
1965 10 31.20  21.20  26.20 
1965 11 31.70  20.90  26.30 
1965 12 31.50  20.70  26.10 
1966 01 31.20  20.10  25.65 
1966 02 31.60  20.00  25.80 
1966 03 31.70  20.10  25.90 
1966 04 32.80  21.30  27.05 
1966 05 31.90  21.40  26.65 
1966 06 31.10  21.20  26.15 
1966 07 30.40  21.20  25.80 
1966 08 31.40  21.20  26.30 
1966 09 31.60  20.80  26.20 
1966 10 30.90  21.20  26.05 
1966 11 31.60  21.00  26.30 
1966 12 31.80  21.90  26.84 
1967 01 31.20  21.10  26.15 
1967 02 31.70  20.60  26.15 
1967 03 32.50  20.20  26.35 
1967 04 32.09  20.20  26.15 
1967 05 32.09  21.40  26.75 
1967 06 32.00  20.80  26.40 
1967 07 31.30  21.40  26.34 
1967 10 31.60  21.30  26.45 
1967 11 31.00  20.70  25.85 
1967 12 30.90  19.79  25.34 
1968 01 30.00  20.90  25.45 
1968 02 30.90  19.29  25.09 
1968 03 32.59  20.50  26.55 
1968 04 30.60  20.29  25.45 
1968 05 31.80  20.90  26.34 
1968 06 31.70  20.90  26.30 
1968 07 31.50  21.20  26.35 
1968 08 31.50  20.90  26.20 
1968 09 31.80  20.20  26.00 
1968 10 31.20  21.30  26.25 
1968 11 31.60  19.10  25.35 
1968 12 31.50  19.20  25.35 
1969 01 31.10  19.50  25.30 
1969 02 31.50  20.60  26.05 
1969 03 32.40  20.80  26.60 
1969 04 33.00  20.80  26.90 
1969 05 32.80  21.10  26.95 
1969 06 31.70  21.20  26.45 
1969 07 31.70  20.70  26.20 
1969 08 32.70  20.40  26.55 
1969 09 32.00  21.20  26.60 
1969 10 32.20  20.60  26.40 
1969 11 31.70  20.90  26.30 
1969 12 31.80  20.80  26.30 
1970 01 31.50  20.40  25.95 
1970 02 31.70  20.29  26.00 
1970 03 32.09  21.30  26.70 
1970 04 30.50  21.50  26.00 
1970 05 29.40  21.40  25.40 
1970 06 31.60  21.30  26.45 
1970 07 30.70  20.50  25.60 
1970 08 31.20  21.30  26.25 
1970 09 31.40  21.00  26.20 
1970 10 31.20  21.00  26.10 
1970 11 31.00  22.00  26.50 
1970 12 31.00  21.80  26.40 
1971 01 30.20  21.20  25.70 
1971 02 30.70  21.60  26.15 
1971 03 31.20  20.80  26.00 
1971 04 32.50  21.20  26.85 
1971 05 30.90  21.70  26.30 
1971 06 30.30  21.40  25.84 
1971 07 30.80  21.00  25.90 
1971 08 31.10  20.70  25.90 
1971 09 30.70  20.90  25.80 
1971 10 30.10  21.30  25.70 
1971 11 30.30  21.00  25.65 
1971 12 30.80  21.00  25.90 
1972 01 29.80  20.70  25.25 
1972 02 30.60  20.90  25.75 
1972 03 31.00  20.60  25.80 
1972 04 31.60  21.30  26.45 
1972 05 31.70  20.90  26.30 
1972 06 31.40  20.90  26.15 
1972 07 32.30  20.90  26.59 
1972 08 31.40  20.90  26.15 
1972 09 30.80  21.00  25.90 
1972 10 31.60  21.10  26.35 
1972 11 31.70  21.20  26.45 
1972 12 31.90  20.70  26.30 
1973 01 32.30  20.10  26.20 
1973 02 32.00  20.00  26.00 
1973 03 32.00  20.60  26.30 
1973 04 32.20  21.60  26.90 
1973 05 31.50  21.60  26.55 
1973 06 31.40  21.70  26.55 
1973 07 31.70  21.10  26.40 
1973 08 31.30  21.30  26.30 
1973 09 30.70  20.90  25.80 
1973 10 31.00  21.30  26.15 
1973 11 31.20  21.80  26.50 
1973 12 31.60  21.50  26.55 
1974 01 30.10  21.10  25.60 
1974 02 30.90  21.70  26.30 
1974 03 31.70  21.60  26.65 
1974 04 32.50  21.40  26.95 
1974 05 31.90  22.00  26.95 
1974 06 31.70  20.10  25.90 
1974 07 31.30  20.50  25.90 
1974 08 31.90  21.80  26.84 
1974 09 31.30  21.00  26.15 
1974 10 30.40  21.20  25.80 
1974 11 31.30  21.40  26.34 
1974 12 31.10  21.10  26.10 
1975 01 31.20  21.10  26.15 
1975 02 31.10  21.20  26.15 
1975 03 31.10  20.90  26.00 
1975 04 32.09  21.10  26.59 
1975 05 31.30  20.80  26.05 
1975 06 30.80  20.50  25.65 
1975 07 30.70  20.60  25.65 
1975 08 31.90  20.10  26.00 
1975 09 30.40  21.60  26.00 
1975 10 31.00  21.50  26.25 
1975 11 31.00  21.20  26.10 
1975 12 31.50  21.60  26.55 
