1957 09 99.99  21.40 -99.99 
1957 10 99.99  22.10 -99.99 
1957 11 99.99  21.50 -99.99 
1957 12 99.99  21.80 -99.99 
1958 01 99.99  22.90 -99.99 
1958 02 99.99  22.80 -99.99 
1958 03 99.99  22.80 -99.99 
1958 04 99.99  22.80 -99.99 
1958 05 99.99  23.50 -99.99 
1958 06 99.99  23.80 -99.99 
1958 07 99.99  23.00 -99.99 
1958 08 99.99  22.90 -99.99 
1958 11 99.99  22.70 -99.99 
1958 12 99.99  22.50 -99.99 
1979 02 99.99  24.00 -99.99 
1979 03 31.70 -99.99 -99.99 
1979 04 30.40  23.80  27.09 
1979 05 99.99  23.50 -99.99 
1979 06 99.99  24.00 -99.99 
1979 07 29.80  22.80  26.30 
1979 08 99.99  24.40 -99.99 
1979 09 30.30  23.50  26.90 
1979 10 30.30  23.30  26.80 
1979 11 30.50  23.50  27.00 
1979 12 31.00 -99.99 -99.99 
1980 01 31.60  22.60  27.10 
1980 02 99.99  22.30 -99.99 
1980 03 99.99  22.20 -99.99 
1980 04 31.30  22.30  26.80 
1980 05 99.99  23.60 -99.99 
1980 06 30.80  22.90  26.84 
1980 07 30.90  22.80  26.84 
1980 09 99.99  22.30 -99.99 
1981 02 32.09  22.60  27.34 
1981 03 99.99  23.40 -99.99 
1981 04 31.80 -99.99 -99.99 
1981 06 31.60  22.20  26.90 
1985 08 30.60  23.60  27.10 
1985 09 30.70  22.80  26.75 
1985 10 99.99  22.60 -99.99 
1985 11 99.99  22.70 -99.99 
1985 12 30.40 -99.99 -99.99 
1986 01 29.70  22.10  25.90 
1986 02 32.40  22.20  27.30 
1986 04 31.30  22.70  27.00 
1986 05 31.00 -99.99 -99.99 
1986 06 31.30  23.30  27.30 
1986 07 30.50  22.70  26.60 
1986 08 30.80  23.00  26.90 
1986 09 30.90  22.50  26.70 
1986 10 30.20  22.10  26.15 
1986 11 99.99  21.60 -99.99 
1986 12 30.10  22.30  26.20 
1987 01 29.40 -99.99 -99.99 
1987 02 31.40 -99.99 -99.99 
1987 03 32.80  23.00  27.90 
1987 04 32.50 -99.99 -99.99 
1987 05 30.90 -99.99 -99.99 
1987 06 99.99  23.70 -99.99 
1987 07 99.99  23.20 -99.99 
1987 08 31.00 -99.99 -99.99 
1987 10 99.99  22.60 -99.99 
1987 11 31.10  22.10  26.60 
1987 12 30.40  22.90  26.65 
1988 03 31.60  23.00  27.30 
1988 04 31.10 -99.99 -99.99 
1988 05 31.80 -99.99 -99.99 
1988 06 31.20 -99.99 -99.99 
1988 07 30.60 -99.99 -99.99 
1988 09 30.50 -99.99 -99.99 
1988 12 30.40 -99.99 -99.99 
1989 01 31.30 -99.99 -99.99 
1990 12 30.60 -99.99 -99.99 
1991 01 31.40 -99.99 -99.99 
1991 02 32.00 -99.99 -99.99 
1991 09 32.20 -99.99 -99.99 
1991 10 32.00 -99.99 -99.99 
1991 12 29.90 -99.99 -99.99 
1992 01 30.70 -99.99 -99.99 
1992 02 32.09 -99.99 -99.99 
1992 03 31.80 -99.99 -99.99 
1992 06 31.50 -99.99 -99.99 
1992 07 30.60 -99.99 -99.99 
1992 08 31.20 -99.99 -99.99 
1992 09 30.40 -99.99 -99.99 
1992 10 30.70 -99.99 -99.99 
1992 11 30.10 -99.99 -99.99 
1992 12 29.40 -99.99 -99.99 
1993 02 31.70 -99.99 -99.99 
1993 03 30.70 -99.99 -99.99 
1993 04 31.00  22.90  26.95 
1993 05 30.70 -99.99 -99.99 
1993 06 30.90 -99.99 -99.99 
1993 07 30.40  23.10  26.75 
1993 08 31.10 -99.99 -99.99 
1993 09 30.80 -99.99 -99.99 
1993 10 30.60 -99.99 -99.99 
1993 11 30.50 -99.99 -99.99 
1993 12 30.50 -99.99 -99.99 
1994 01 31.00  23.10  27.05 
1994 02 31.50 -99.99 -99.99 
1994 03 30.20 -99.99 -99.99 
1994 04 30.80 -99.99 -99.99 
1994 05 30.60 -99.99 -99.99 
1994 06 30.90 -99.99 -99.99 
1994 08 31.00  24.40  27.70 
1994 09 31.20  24.80  28.00 
1994 10 31.30 -99.99 -99.99 
1994 11 31.30  23.10  27.20 
1994 12 30.90 -99.99 -99.99 
1995 01 30.40  23.00  26.70 
1995 02 30.10 -99.99 -99.99 
1995 03 31.10  22.90  27.00 
1995 04 31.20  22.70  26.95 
1995 05 31.30  22.80  27.05 
1997 01 31.40  21.90  26.65 
1997 02 31.40  21.90  26.65 
1997 06 31.60  22.60  27.10 
1997 07 30.80  22.50  26.65 
1997 08 30.90  22.90  26.90 
1997 11 30.50  24.30  27.40 
1998 05 31.90  21.80  26.84 
1998 08 99.99  20.60 -99.99 
1998 12 30.30  19.20  24.75 
1999 10 29.90  20.60  25.25 
1999 11 30.30  19.90  25.09 
2000 02 31.50  22.10  26.80 
