1979 07 21.65  10.86  16.25 
1979 08 20.24  11.95  16.09 
1979 09 17.79   9.01  13.40 
1979 10  8.93   3.41   6.17 
1979 11  3.83  -2.03    .90 
1979 12   .95  -4.77  -1.91 
1980 01 -3.21  -9.82  -6.51 
1980 02 -5.17 -12.29  -8.72 
1980 03 -1.02  -9.10  -5.06 
1980 04  7.29    . 3   3.66 
1980 05 15.60   4.48  10.04 
1980 06 17.12   5.84  11.48 
1980 07 22.06  12.54  17.29 
1980 08 22.55  14.29  18.42 
1980 09 16.06   8.75  12.40 
1980 10  8.42   1.72   5.07 
1980 11  4.11  -1.00   1.55 
1980 12 -3.11  -9.82  -6.46 
1981 01 -3.75 -10.22  -6.98 
1981 02 -2.59  -9.64  -6.12 
1981 03  1.39  -6.28  -2.44 
1981 04  7.91   -.66   3.62 
1981 05 12.58   3.06   7.82 
1981 06 18.21   7.75  12.98 
1981 07 22.11  12.60  17.35 
1981 08 22.11  13.43  17.77 
1981 09 15.58   8.50  12.04 
1981 10  8.58   2.22   5.40 
1981 11  6.91    .45   3.67 
1981 12  -.72  -6.18  -3.44 
1982 01 -7.78 -15.11 -11.44 
1982 02 -5.68 -13.05  -9.36 
1982 03  -.89  -7.69  -4.29 
1982 04  5.85  -2.07   1.89 
1982 05 15.15   4.78   9.96 
1982 06 15.48   6.41  10.94 
1982 07 21.56  10.96  16.26 
1982 08 18.62   9.85  14.23 
1982 09 16.23   8.91  12.57 
1982 10 11.31   5.07   8.19 
1982 11  3.57  -2.49    .53 
1982 12   .60  -5.38  -2.39 
1983 01 -2.08  -8.50  -5.29 
1983 02  -.80  -5.81  -3.30 
1983 03   .83  -4.69  -1.93 
1983 04  5.18  -1.04   2.07 
1983 05 10.86   2.21   6.53 
1983 06 19.65   8.34  13.99 
1983 07 24.36  13.42  18.89 
1983 08 23.91  15.58  19.74 
1983 09 18.31  11.90  15.10 
1983 10 11.19   4.32   7.75 
1983 11  5.12   -.92   2.09 
1983 12 -5.42 -11.36  -8.38 
1984 01 -5.71 -12.88  -9.29 
1984 02   .19  -5.69  -2.75 
1984 03 -1.85 -10.04  -5.94 
1984 04  8.28    .27   4.27 
