1981 03 12.31  -4.07   4.12 
1981 04 19.20   3.49  11.35 
1981 05 18.36   5.05  11.70 
1981 06 27.65  11.05  19.35 
1981 07 30.20  14.50  22.35 
1981 08 28.45  12.69  20.57 
1981 09 26.21   8.14  17.17 
1981 10 15.74    . 0   7.87 
1981 11 13.29  -3.00   5.14 
1981 12  5.83  -9.57  -1.86 
1982 01  -.24 -14.84  -7.54 
1982 02  5.46 -11.83  -3.18 
1982 03  9.06  -4.81   2.12 
1982 04 13.82 -99.99 -99.99 
1982 05 19.14   4.87  12.00 
1982 06 22.58   9.08  15.83 
1982 07 30.88  13.81  22.34 
1982 08 30.79  14.11  22.45 
1982 09 24.02   7.65  15.83 
1982 10 15.10    .36   7.73 
1982 11  6.64  -6.44    . 9 
1982 12  5.37 -99.99 -99.99 
1983 01  6.33 -99.99 -99.99 
1983 02  7.97 -99.99 -99.99 
1983 03  7.72  -4.13   1.79 
1983 04 10.96  -2.10   4.42 
1983 05 17.51   3.06  10.28 
1983 06 24.55   9.79  17.17 
1983 07 31.22  14.03  22.62 
1983 08 33.50  15.30  24.40 
1983 09 26.11   7.26  16.68 
1983 10 18.59 -99.99 -99.99 
1983 11  7.65  -6.72    .46 
1983 12 -5.70 -19.10 -12.40 
1984 01  1.15 -99.99 -99.99 
1984 02  6.88  -5.76    .55 
1984 03  7.64  -4.44   1.59 
1984 04  9.97  -1.21   4.38 
1984 05 21.28 -99.99 -99.99 
1984 06 26.29   9.35  17.82 
1984 07 30.79  14.35  22.57 
1984 08 30.87  14.18  22.52 
1984 09 20.49 -99.99 -99.99 
1984 10 14.99 -99.99 -99.99 
1984 11 10.50  -6.51   1.99 
1985 01   .19 -99.99 -99.99 
1985 02  3.10 -12.34  -4.62 
1985 03 12.17  -5.48   3.34 
1985 05 24.79   6.64  15.71 
1985 06 26.69   8.80  17.74 
1985 07 31.61  14.40  23.00 
1985 08 29.28  12.07  20.67 
1985 09 21.95   6.81  14.38 
1985 10 16.75 -99.99 -99.99 
1986 06 27.59  12.57  20.08 
1986 07 30.24  13.90  22.07 
1986 08 28.96  12.09  20.52 
1986 09 20.57   7.92  14.24 
1986 10 15.91   1.76   8.83 
1986 11  8.87  -5.85   1.51 
1986 12  7.59  -9.37   -.88 
1987 01  5.11  -9.60  -2.24 
1987 02  6.60  -6.12    .24 
1987 03  6.27  -6.94   -.33 
1987 04 18.28    .45   9.36 
1987 05 21.85   7.80  14.82 
1987 06 28.25  10.42  19.33 
1987 07 31.31  12.84  22.07 
1987 08 28.36  10.90  19.63 
1987 09 25.04   4.04  14.54 
1987 10 16.93  -1.75   7.59 
1987 11 10.80  -4.67   3.06 
1987 12  4.46 -10.52  -3.03 
1988 01  -.76 -13.69  -7.22 
1988 02  4.60  -9.72  -2.56 
1988 03 10.14  -5.05   2.54 
