1981 04 10.90 -99.99 -99.99 
1981 11  9.50 -99.99 -99.99 
1982 01  4.19    .63   2.41 
1982 02  5.54   1.31   3.42 
1982 03 10.33   1.92   6.12 
1982 04 11.19   3.92   7.55 
1982 07 19.39 -99.99 -99.99 
1982 09 19.45  10.86  15.16 
1982 10 13.30 -99.99 -99.99 
1982 11  7.57 -99.99 -99.99 
1982 12  6.43 -99.99 -99.99 
1983 02  9.14 -99.99 -99.99 
1983 03 11.75 -99.99 -99.99 
1983 05 17.89 -99.99 -99.99 
1983 06 16.34  11.94  14.14 
1983 07 19.17 -99.99 -99.99 
1983 08 22.55 -99.99 -99.99 
1983 09 17.69 -99.99 -99.99 
1983 12  3.98 -99.99 -99.99 
1984 01  7.55 -99.99 -99.99 
1984 05 12.66   6.44   9.55 
1984 06 17.28 -99.99 -99.99 
1984 07 21.61 -99.99 -99.99 
1984 08 19.87  12.60  16.23 
1984 09 17.53 -99.99 -99.99 
1984 10 11.67   5.15   8.41 
1984 11  7.00 -99.99 -99.99 
1985 02  6.44   1.76   4.10 
1985 03  9.24   2.09   5.67 
1985 04 10.64   5.00   7.82 
1985 05 16.00 -99.99 -99.99 
1985 06 19.37  10.94  15.16 
1985 09 19.09 -99.99 -99.99 
1985 10 12.21 -99.99 -99.99 
1985 11  4.57   -.46   2.05 
1986 01  8.89 -99.99 -99.99 
1986 02  7.61   -.12   3.74 
1986 03 10.74 -99.99 -99.99 
1986 04 10.98   3.17   7.07 
1986 05 99.99   6.75 -99.99 
1986 06 18.83 -99.99 -99.99 
1987 01  7.43 -99.99 -99.99 
1987 02  9.09   4.10   6.59 
1987 03 11.21   3.56   7.38 
1987 04 12.17   5.08   8.62 
1987 06 18.53 -99.99 -99.99 
1987 07 20.19  11.57  15.88 
1987 09 19.28  10.66  14.97 
1988 02 99.99   2.78 -99.99 
1988 03  9.93 -99.99 -99.99 
1988 05 14.24 -99.99 -99.99 
1988 09 20.04 -99.99 -99.99 
1988 11  8.12 -99.99 -99.99 
