1974 06 99.99  10.88 -99.99 
1974 09 21.46 -99.99 -99.99 
1974 10 15.00  -1.04   6.98 
1974 12 99.99 -21.46 -99.99 
1975 06 27.18  11.42  19.29 
1975 07 30.10 -99.99 -99.99 
1975 08 26.47 -99.99 -99.99 
1975 09 21.28   6.12  13.70 
1976 05 22.31 -99.99 -99.99 
1976 06 26.76 -99.99 -99.99 
1976 08 29.97 -99.99 -99.99 
1977 04 16.95 -99.99 -99.99 
1977 06 30.54 -99.99 -99.99 
1977 07 27.19 -99.99 -99.99 
1978 01 11.85 -99.99 -99.99 
1978 02 10.37 -99.99 -99.99 
1978 03 -3.37 -99.99 -99.99 
1978 04 11.64 -99.99 -99.99 
1978 05 17.68 -99.99 -99.99 
1978 06 25.64 -99.99 -99.99 
1978 07 28.58 -99.99 -99.99 
1978 08 24.85 -99.99 -99.99 
1979 04  4.59 -99.99 -99.99 
1979 05 20.19 -99.99 -99.99 
1979 06 23.88 -99.99 -99.99 
1979 07 27.90 -99.99 -99.99 
1979 08 26.32 -99.99 -99.99 
1979 09 20.63 -99.99 -99.99 
1980 03 -7.73 -99.99 -99.99 
1980 04 10.10 -99.99 -99.99 
1980 05 22.44 -99.99 -99.99 
1980 06 26.54 -99.99 -99.99 
1980 07 29.70 -99.99 -99.99 
1980 08 23.97 -99.99 -99.99 
1980 09 21.04 -99.99 -99.99 
1980 10  9.53 -99.99 -99.99 
1981 02 -7.91 -99.99 -99.99 
1981 04 10.68 -99.99 -99.99 
1981 05 17.89 -99.99 -99.99 
1981 06 24.69  12.08  18.38 
1981 07 28.56 -99.99 -99.99 
1981 08 30.21 -99.99 -99.99 
1981 09 20.90 -99.99 -99.99 
1981 10 12.31 -99.99 -99.99 
1981 11   .62 -99.99 -99.99 
1981 12 -6.59 -99.99 -99.99 
1988 03 -5.16 -99.99 -99.99 
1988 04 11.26 -99.99 -99.99 
1988 08 27.75 -99.99 -99.99 
1988 09 21.32 -99.99 -99.99 
1988 10  9.78 -99.99 -99.99 
1989 03 -3.59 -99.99 -99.99 
1989 04  6.62 -99.99 -99.99 
1989 07 31.37 -99.99 -99.99 
1989 10 11.88 -99.99 -99.99 
1990 04 13.07 -99.99 -99.99 
1990 05 21.54 -99.99 -99.99 
1990 06 29.12 -99.99 -99.99 
1990 07 25.06 -99.99 -99.99 
1990 09 21.84 -99.99 -99.99 
1990 11 -2.93 -99.99 -99.99 
1991 02 13.25 -99.99 -99.99 
1991 08 25.16 -99.99 -99.99 
