1973 02 18.10  10.90  14.50 
1973 03 18.50  10.70  14.60 
1973 04 20.20  13.50  16.85 
1973 05 24.20  16.40  20.29 
1973 06 27.30 -99.99 -99.99 
1973 07 30.10 -99.99 -99.99 
1973 08 99.99  22.20 -99.99 
1973 09 99.99  20.70 -99.99 
1973 10 26.40  17.79  22.09 
1973 11 19.90  12.10  16.00 
1973 12 99.99  11.00 -99.99 
1974 01 99.99   6.80 -99.99 
1974 02 99.99   8.60 -99.99 
1974 03 19.20  10.90  15.05 
1974 04 99.99  12.20 -99.99 
1974 05 99.99  15.10 -99.99 
1974 06 99.99  19.10 -99.99 
1974 09 99.99  20.10 -99.99 
1974 10 99.99  18.20 -99.99 
1974 12 99.99   9.60 -99.99 
1975 02 99.99   8.70 -99.99 
1975 03 19.20   9.70  14.45 
1975 04 23.80  13.70  18.75 
1975 05 23.90  15.80  19.85 
1975 06 27.50  20.00  23.75 
1975 07 29.90  21.40  25.65 
1975 08 29.80  21.80  25.80 
1975 09 30.10  20.29  25.20 
1975 10 99.99  18.10 -99.99 
1975 11 22.80  14.20  18.50 
1975 12 17.60  10.30  13.95 
1976 01 16.79   9.89  13.35 
1976 02 15.60   7.50  11.55 
1976 03 18.70   9.80  14.25 
1976 05 99.99  15.70 -99.99 
1976 06 99.99  18.70 -99.99 
1976 07 99.99  21.80 -99.99 
1976 08 99.99  21.50 -99.99 
1976 09 99.99  20.00 -99.99 
1976 11 99.99  14.20 -99.99 
1976 12 99.99  11.40 -99.99 
1977 01 99.99   8.10 -99.99 
1977 02 99.99   9.80 -99.99 
1977 03 99.99  10.10 -99.99 
1977 04 99.99  12.80 -99.99 
1977 05 99.99  15.80 -99.99 
1977 06 99.99  19.40 -99.99 
1977 07 99.99  22.40 -99.99 
1977 08 99.99  22.00 -99.99 
1977 09 99.99  20.90 -99.99 
1977 10 25.50  15.80  20.65 
1977 11 23.40  13.80  18.60 
1977 12 17.50  10.40  13.95 
1978 01 17.20  10.20  13.70 
1978 02 17.70  10.70  14.20 
1978 03 18.40  10.70  14.54 
1978 04 20.70  12.60  16.65 
1978 05 25.00  16.29  20.65 
1978 06 27.80  19.40  23.59 
1978 07 30.70  21.90  26.30 
1978 08 30.10  21.60  25.85 
1978 09 28.40  20.70  24.55 
1978 10 26.90  17.79  22.34 
1978 11 21.80  12.80  17.29 
1978 12 18.70  12.00  15.35 
1979 01 17.50  10.00  13.75 
1979 02 18.20  11.20  14.70 
1979 03 19.70  11.00  15.35 
1979 04 22.10  13.50  17.79 
1979 05 24.40  16.20  20.29 
1979 06 28.80  20.50  24.65 
1979 07 29.80  21.60  25.70 
1979 08 30.10  21.90  26.00 
1979 09 29.60  21.00  25.30 
1979 10 26.90  18.20  22.55 
1979 11 23.30  16.00  19.65 
1979 12 18.29  11.20  14.75 
1980 01 15.60   9.50  12.55 
1980 02 15.90   8.50  12.20 
1980 03 18.10   9.89  14.00 
1980 04 20.29  12.90  16.59 
1980 05 23.60  15.00  19.29 
1980 06 26.90  18.79  22.84 
1980 07 30.00  21.20  25.60 
1980 08 31.20  22.70  26.95 
1980 09 28.90  19.79  24.34 
1980 10 26.20  17.50  21.85 
1980 11 23.40  14.80  19.10 
1980 12 18.79  11.50  15.15 
1981 01 15.80   9.60  12.70 
1981 02 16.79   9.70  13.25 
1981 03 19.20  11.60  15.40 
1981 04 21.10  12.70  16.90 
1981 05 23.20  14.70  18.95 
1981 06 28.50  19.70  24.10 
1981 07 30.00  21.90  25.95 
1981 08 31.00  22.60  26.80 
1981 09 29.00  20.40  24.70 
1981 10 27.60  18.40  23.00 
1981 11 21.20  13.00  17.10 
1981 12 19.50  13.20  16.35 
2003 07 30.50 -99.99 -99.99 
2004 04 99.99  11.90 -99.99 
2004 08 30.10 -99.99 -99.99 
2004 10 99.99  18.10 -99.99 
