1956 07 32.70 -99.99 -99.99 
1956 08 31.30  22.40  26.84 
1956 10 33.70  19.60  26.65 
1956 11 28.20  20.60  24.40 
1956 12 26.90  22.40  24.65 
1957 01 26.90  21.90  24.40 
1957 02 27.00  21.00  24.00 
1957 03 27.60  20.20  23.90 
1957 04 27.90  20.29  24.09 
1957 05 29.10  21.90  25.50 
1957 06 30.30  24.20  27.25 
1957 07 30.10  24.80  27.45 
1957 08 30.30  25.20  27.75 
1957 09 30.20  24.50  27.35 
1957 10 29.40  23.70  26.55 
1957 11 27.90  24.10  26.00 
1957 12 27.10  22.60  24.85 
1958 01 26.60  21.80  24.20 
1958 02 27.20  21.70  24.45 
1958 03 28.70  22.70  25.70 
1958 04 29.30  23.90  26.59 
1958 05 29.10  24.30  26.70 
1958 06 30.10  25.20  27.65 
1958 07 29.20  25.20  27.20 
1958 08 29.00  25.10  27.05 
1958 09 28.80  24.40  26.59 
1958 10 29.10  24.60  26.85 
1958 11 27.40  24.70  26.05 
1958 12 27.90  23.70  25.80 
1959 01 26.30  22.30  24.30 
1959 02 26.60  22.30  24.45 
1959 03 28.40  23.20  25.80 
1959 04 28.70  23.60  26.15 
1959 05 28.10  23.80  25.95 
1959 06 30.00  25.10  27.55 
1959 07 29.90  25.30  27.59 
1959 08 29.70  25.00  27.35 
1959 09 30.40  25.20  27.80 
1959 10 29.20  24.40  26.80 
1959 11 28.60  23.90  26.25 
1959 12 28.30  23.70  26.00 
1960 01 27.60  22.80  25.20 
1960 02 27.70  22.30  25.00 
1960 03 28.40  22.50  25.45 
1960 04 29.30  23.10  26.20 
1960 05 29.90  23.60  26.75 
1960 06 30.10  24.40  27.25 
1960 07 29.70  25.10  27.40 
1960 08 29.80  25.60  27.70 
1960 09 29.70  24.40  27.05 
1960 10 29.90  25.20  27.55 
1960 11 29.40  24.30  26.84 
1960 12 27.20  23.30  25.25 
1961 01 27.40  22.70  25.05 
1961 02 27.40  22.30  24.84 
1961 03 27.90  22.60  25.25 
1961 04 29.40  23.10  26.25 
1961 05 29.80  24.10  26.95 
1961 06 30.00  24.60  27.30 
1961 07 29.50  25.10  27.30 
1961 08 30.30  25.20  27.75 
1961 09 30.00  24.40  27.20 
1961 10 29.40  23.80  26.59 
1961 11 28.20  22.40  25.30 
1961 12 27.20  22.70  24.95 
1962 01 26.40  22.60  24.50 
1962 02 26.30  21.70  24.00 
1962 03 27.60  21.70  24.65 
1962 04 27.80  22.80  25.30 
1962 05 28.90  23.30  26.09 
1962 06 29.20  24.60  26.90 
1962 07 30.00  25.20  27.60 
1962 08 30.40  24.80  27.59 
1962 09 29.90  24.70  27.30 
1962 10 29.90  23.60  26.75 
1962 11 29.20  23.70  26.45 
1962 12 28.80  23.30  26.05 
1963 01 26.90  22.60  24.75 
1963 02 27.70  22.40  25.05 
1963 03 28.20  23.10  25.65 
1963 04 28.70  23.60  26.15 
1963 06 29.30  26.00  27.65 
1963 07 29.50  25.80  27.65 
1963 08 30.40  26.40  28.40 
1963 10 30.70  25.10  27.90 
1963 11 29.30  24.90  27.09 
1963 12 28.40  24.40  26.40 
1964 01 26.30  23.30  24.80 
1964 02 26.30  23.30  24.80 
1964 03 27.90  23.20  25.55 
1964 04 26.10  23.40  24.75 
1964 05 27.20  24.50  25.85 
1964 06 27.00  25.20  26.10 
1964 07 26.90  25.60  26.25 
1966 09 30.30  25.60  27.95 
1966 10 30.30  23.90  27.09 
1966 11 29.60  23.00  26.30 
1966 12 28.20  22.30  25.25 
1967 01 28.20  21.90  25.05 
1967 02 27.10  21.10  24.10 
1967 03 26.40  21.10  23.75 
1967 04 28.30  21.90  25.09 
1967 05 29.70  23.70  26.70 
1967 06 30.90  24.40  27.65 
1967 07 30.10  25.00  27.55 
1967 08 30.20  24.70  27.45 
1967 09 30.80  24.20  27.50 
1967 10 30.10  23.70  26.90 
1967 11 29.30  23.40  26.34 
1967 12 27.80  22.30  25.05 
1968 01 27.30  21.20  24.25 
1968 02 28.10  20.10  24.10 
1968 03 27.70  21.70  24.70 
1968 04 27.90  22.30  25.09 
1968 05 30.40  23.90  27.15 
1968 06 30.50  23.90  27.20 
1968 07 30.70  24.00  27.35 
1968 08 30.60  24.50  27.55 
1968 09 31.50  24.40  27.95 
1968 10 30.80  24.00  27.40 
1968 11 29.70  22.90  26.30 
1968 12 28.50  21.70  25.10 
1969 01 27.40  20.80  24.09 
1969 02 27.70  20.50  24.10 
1969 03 28.50  21.90  25.20 
1969 04 30.30  23.80  27.05 
1969 05 30.40  23.80  27.09 
1969 06 31.50  24.80  28.15 
1969 07 32.20  25.30  28.75 
1969 08 30.10  25.00  27.55 
1969 09 31.90  25.50  28.70 
1969 11 31.80  21.20  26.50 
