1971 12 40.78 -99.99 -99.99 
1972 01 40.98  23.03  32.00 
1972 02 41.72  24.99  33.35 
1972 03 39.65  22.89  31.27 
1972 04 36.16  20.15  28.15 
1972 05 31.30  14.92  23.11 
1972 06 27.25  13.35  20.29 
1972 07 25.21  12.30  18.75 
1972 08 26.61  12.32  19.46 
1972 09 32.97  16.74  24.85 
1972 10 35.91  16.87  26.39 
1972 11 39.96  22.24  31.09 
1972 12 41.79  24.81  33.30 
1973 01 39.55  24.42  31.98 
1973 02 41.44  25.84  33.64 
1973 03 38.50  24.52  31.51 
1973 04 33.95  20.94  27.44 
1973 05 30.19  17.62  23.90 
1973 06 25.86  13.98  19.92 
1973 07 26.87  15.59  21.23 
1973 08 26.92  14.00  20.45 
1973 09 30.95  13.79  22.37 
1973 10 35.75  18.84  27.30 
1973 11 39.08  22.21  30.64 
1973 12 39.50  25.08  32.29 
1974 01 36.34  23.93  30.14 
1974 02 38.05  24.43  31.24 
1974 03 38.30  24.48  31.39 
1974 04 33.18  20.69  26.93 
1974 05 29.18  16.95  23.07 
1974 06 26.00  13.88  19.94 
1974 07 26.80  13.27  20.03 
1974 08 27.55  14.53  21.04 
1974 09 31.45  17.48  24.46 
1975 02 37.22  24.43  30.82 
1975 04 34.64  21.85  28.24 
1975 06 27.17  13.32  20.24 
1975 07 26.35  14.54  20.44 
1975 09 33.09  17.10  25.09 
1975 10 31.61  17.87  24.74 
1976 02 39.62  24.19  31.90 
1976 03 37.14  23.02  30.08 
1976 06 27.70  13.13  20.41 
1976 07 27.76  11.72  19.74 
1976 11 36.23  19.23  27.73 
1977 02 43.30  26.05  34.67 
1977 06 26.78  14.35  20.56 
1977 09 31.46  14.69  23.07 
1977 11 99.99  23.46 -99.99 
1978 02 39.84  24.92  32.38 
1978 03 38.15  25.08  31.61 
1978 04 35.82  21.61  28.71 
1978 05 28.66  16.87  22.77 
1978 06 25.80  12.20  19.00 
1978 07 24.80  11.40  18.09 
1978 08 26.20  14.10  20.15 
1978 09 99.99  13.80 -99.99 
1979 01 43.00  25.50  34.25 
1979 02 99.99  24.50 -99.99 
1979 03 99.99  24.30 -99.99 
1979 04 99.99  21.80 -99.99 
1979 05 28.20  16.10  22.15 
1979 07 27.90  11.20  19.54 
1979 08 27.00  14.00  20.50 
1979 09 99.99  16.79 -99.99 
1979 10 37.50  19.00  28.25 
1979 11 39.70  21.70  30.70 
1980 01 40.59  25.90  33.25 
1980 02 40.59 -99.99 -99.99 
1980 03 41.40  26.20  33.80 
1980 04 99.99  21.10 -99.99 
1980 05 32.40  18.40  25.40 
1980 06 26.20  15.70  20.95 
1980 07 25.10  12.30  18.70 
1980 08 99.99  14.30 -99.99 
1980 09 34.90  18.20  26.55 
1980 10 35.09  18.29  26.70 
1980 11 38.90  21.40  30.15 
1981 02 99.99  23.80 -99.99 
1981 03 37.30  23.40  30.34 
1981 04 99.99  22.80 -99.99 
1981 05 99.99  16.60 -99.99 
1981 06 99.99  12.90 -99.99 
1981 07 99.99  11.30 -99.99 
1981 08 29.20  14.50  21.85 
1981 09 35.40  17.90  26.65 
1981 11 36.40  19.79  28.10 
1982 01 99.99  24.90 -99.99 
1982 02 99.99  24.70 -99.99 
1982 03 37.70  24.20  30.95 
1982 05 30.80  17.00  23.90 
1982 06 99.99  11.60 -99.99 
1982 07 26.70  12.70  19.70 
1982 08 30.30  14.30  22.30 
1982 09 31.20  15.50  23.35 
1982 10 99.99  20.00 -99.99 
1982 11 41.10  22.70  31.90 
1982 12 41.70  24.50  33.09 
1983 01 99.99  24.50 -99.99 
1983 02 99.99  26.70 -99.99 
1983 03 39.59  24.30  31.95 
1983 04 99.99  21.30 -99.99 
1983 05 32.70  16.60  24.65 
1983 06 28.70  14.80  21.75 
1983 07 25.80  11.30  18.54 
1983 08 30.00  13.40  21.70 
1983 09 34.30  17.20  25.75 
1983 10 37.00  20.20  28.60 
1983 11 39.20  23.30  31.25 
1984 01 41.50  24.10  32.80 
1984 02 99.99  23.90 -99.99 
1984 03 36.00  23.40  29.70 
1984 05 30.70  19.20  24.95 
1984 06 28.10  12.30  20.20 
1984 07 24.00  11.40  17.70 
1984 08 28.90  13.30  21.10 
1984 09 31.00  14.50  22.75 
1984 10 37.70  21.60  29.65 
1984 11 39.59  21.70  30.65 
1985 03 99.99  23.70 -99.99 
1985 05 30.30  16.40  23.34 
1985 06 99.99  13.20 -99.99 
1985 09 33.50  15.90  24.70 
1985 10 34.70  16.40  25.55 
1985 11 99.99  22.00 -99.99 
1986 02 99.99  25.20 -99.99 
1986 05 30.40  15.30  22.85 
1986 06 26.90  14.90  20.90 
1986 07 24.20   9.89  17.04 
1986 08 99.99  11.10 -99.99 
1986 09 31.60  15.70  23.65 
1986 10 99.99  18.10 -99.99 
1986 11 39.80  21.40  30.59 
1987 03 38.70  24.90  31.80 
1987 05 30.30  17.20  23.75 
1987 06 26.90  14.80  20.85 
1987 07 29.00  13.20  21.10 
1987 08 29.50  12.80  21.15 
1987 09 33.50  15.70  24.60 
1987 10 35.80  18.60  27.20 
1987 11 36.90  20.29  28.60 
1987 12 40.59  23.00  31.80 
1988 01 43.60  26.40  35.00 
1988 02 41.59  26.32  33.95 
1988 03 39.88 -99.99 -99.99 
1988 05 28.81  17.94  23.37 
1988 08 30.94 -99.99 -99.99 
1988 11 38.00 -99.99 -99.99 
1989 06 26.10  14.72  20.41 
1989 07 26.93  13.64  20.28 
1989 08 29.28 -99.99 -99.99 
1989 09 34.30  17.10  25.70 
1989 10 35.66 -99.99 -99.99 
1989 11 99.99  22.87 -99.99 
1989 12 40.27  23.22  31.74 
1990 01 39.78 -99.99 -99.99 
1990 02 38.22  24.56  31.39 
1990 03 39.14  25.48  32.30 
1990 04 37.09  22.11  29.60 
1990 06 26.86  14.80  20.83 
1990 07 25.93  12.12  19.02 
1990 08 28.68  15.83  22.25 
1990 09 32.52  16.20  24.36 
1990 10 35.88  19.26  27.57 
1990 11 41.64  23.26  32.45 
1991 01 44.62  28.32  36.47 
1991 02 41.72  25.80  33.76 
1991 04 36.63 -99.99 -99.99 
1991 05 32.15  18.51  25.33 
1991 07 27.09  13.18  20.13 
1991 08 99.99  13.88 -99.99 
1991 09 32.14  14.76  23.45 
1991 10 38.88  20.94  29.91 
1991 11 99.99  19.82 -99.99 
1993 06 26.04  13.92  19.98 
1993 07 99.99  12.23 -99.99 
1994 12 40.00  24.51  32.25 
1995 04 33.27 -99.99 -99.99 
1995 05 29.18 -99.99 -99.99 
1995 06 24.37  11.93  18.15 
1995 07 25.22  12.07  18.64 
1995 08 29.29  12.72  21.00 
1995 09 29.97  15.17  22.57 
1995 10 35.33  17.85  26.59 
1995 11 36.73  20.17  28.45 
1995 12 37.40  22.87  30.13 
1996 01 42.49  25.08  33.78 
1996 02 39.46  24.77  32.11 
1996 03 39.24  24.19  31.71 
1996 06 27.44  17.18  22.31 
1996 07 26.90  14.16  20.53 
1996 08 28.17  13.55  20.86 
1996 09 32.25  15.49  23.87 
1996 10 37.59  20.12  28.85 
1996 11 38.77  22.02  30.39 
1996 12 40.34  24.23  32.28 
1997 01 38.38  24.71  31.54 
1997 02 36.06  24.35  30.20 
1997 03 38.78  23.44  31.11 
1997 04 35.30  20.27  27.78 
1997 05 29.38  18.34  23.86 
1997 06 27.23  14.35  20.79 
1997 07 25.40 -99.99 -99.99 
1997 08 27.85 -99.99 -99.99 
1997 09 30.87 -99.99 -99.99 
1997 10 37.09  19.29  28.20 
1997 11 38.82  21.77  30.29 
1997 12 42.49  25.51  34.00 
1998 01 42.92  25.38  34.14 
1998 02 43.34  27.19  35.26 
1998 03 38.91  24.36  31.63 
1998 04 34.93  22.36  28.64 
1998 05 32.66  20.20  26.43 
1998 06 25.33  14.53  19.93 
1998 07 24.85  13.18  19.01 
1998 08 30.34  14.16  22.25 
1998 09 31.40  16.35  23.87 
1998 10 36.99  20.93  28.96 
1998 11 38.58  21.73  30.15 
1998 12 38.75  24.86  31.80 
1999 01 41.13  26.28  33.70 
1999 02 35.80  24.12  29.96 
1999 03 99.99  24.16 -99.99 
1999 05 30.86  17.29  24.07 
1999 06 28.28  13.91  21.09 
1999 07 27.25  11.55  19.40 
1999 08 30.39  15.28  22.83 
1999 09 32.80  15.95  24.37 
1999 10 35.75  18.20  26.98 
1999 11 37.46  21.40  29.43 
1999 12 39.32  24.49  31.90 
2000 01 36.32  23.33  29.82 
2000 02 38.68  25.33  32.00 
2000 03 34.43  23.88  29.15 
2000 04 33.37  21.42  27.39 
2000 05 28.09  14.05  21.07 
2000 06 26.75  11.57  19.16 
2000 07 28.33  13.13  20.73 
2000 08 28.41  11.66  20.03 
2000 09 34.98  16.64  25.81 
2000 10 36.12  19.49  27.80 
2000 11 37.05  20.50  28.77 
2000 12 40.33 -99.99 -99.99 
2001 01 39.36  25.33  32.34 
2001 02 36.73  24.48  30.60 
2001 03 36.77  22.63  29.70 
2001 04 36.09  20.55  28.32 
2001 05 30.39  17.48  23.93 
2001 06 28.34  13.84  21.09 
2001 07 27.54  13.33  20.43 
2001 08 30.76  14.48  22.62 
2001 09 31.71  16.18  23.94 
2001 10 32.80  16.71  24.75 
2001 11 37.96  20.33  29.14 
2001 12 38.96  21.91  30.43 
2002 01 41.01  24.23  32.62 
2002 02 40.13  25.26  32.69 
2002 03 38.45  25.91  32.18 
2002 04 37.89  22.29  30.09 
2002 05 33.12  19.45  26.29 
2002 06 28.06  13.67  20.86 
2002 07 29.05  12.89  20.97 
2002 08 30.19  14.32  22.25 
2002 09 32.71  16.04  24.38 
2002 10 39.00  20.36  29.68 
2002 11 39.65  21.78  30.71 
2002 12 41.33  24.85  33.09 
2003 01 42.01  27.06  34.53 
2003 02 41.26  26.21  33.73 
2003 03 39.09  24.57  31.83 
2003 04 35.28  21.60  28.43 
2003 05 32.23  18.81  25.52 
2003 06 28.14  15.96  22.05 
2003 07 28.55  13.83  21.18 
2003 08 27.40  12.90  20.15 
2003 10 35.18  18.17  26.68 
2003 12 41.21  23.10  32.15 
2004 02 38.59  25.62  32.10 
2004 04 36.13  22.74  29.43 
2004 06 29.12  14.17  21.64 
2004 07 26.30  15.12  20.71 
2004 08 27.37  13.06  20.21 
2004 09 31.75  15.42  23.58 
2004 10 39.52  22.07  30.79 
2004 11 38.33  22.51  30.42 
2005 01 43.70  26.27  34.98 
2005 02 42.29  26.27  34.28 
2005 06 25.82  13.27  19.54 
2005 07 27.10  12.47  19.78 
2005 08 28.45  13.85  21.15 
