1956 04  17.54 -99.99 -99.99 
1956 06 -99.99   7.11 -99.99 
1956 07  30.89  13.73  22.31 
1956 08  28.83  11.60  20.21 
1956 09  24.49   8.28  16.38 
1956 10  13.35   3.48   8.41 
1956 11   4.01  -2.61   0.70 
1956 12   1.74  -3.57   -.91 
1957 01  -7.07 -13.43 -10.25 
1957 02   0.61  -6.73  -3.06 
1957 03   7.61   -.25   3.68 
1957 04  15.42   2.66   9.04 
1957 05  21.74   8.80  15.27 
1957 06  24.33   9.34  16.83 
1957 07  27.80  10.75  19.27 
1957 08  26.96  10.07  18.51 
1957 09  25.38   9.68  17.52 
1957 10  12.25   2.71   7.48 
1957 11   5.94  -2.04   1.95 
1957 12   4.55  -1.38   1.58 
1958 01   2.73  -2.28   0.22 
1958 02   8.53   2.02   5.27 
1958 03   8.81   -.89   3.96 
1958 04  13.68   0.95   7.31 
1958 05  24.50   8.93  16.71 
1958 06  26.39  11.92  19.15 
1958 07  31.07  13.83  22.45 
1958 08  30.98  13.72  22.35 
1958 09  22.22   7.40  14.81 
1958 10  17.56   2.93  10.24 
1958 11   5.94  -2.10   1.91 
1958 12   1.85  -2.96   -.55 
1959 01   1.34  -4.88  -1.77 
1959 02   1.92  -3.68   -.88 
1959 03   9.68   -.49   4.60 
1959 04  15.76   1.23   8.49 
1959 05  17.65   4.11  10.88 
1959 06  23.63   8.74  16.18 
1959 07  30.09  11.63  20.86 
1959 08  25.34   9.25  17.29 
1959 09  19.33   6.83  13.08 
1959 10  13.93   1.95   7.94 
1959 11   4.80  -3.83   0.48 
1959 12   1.89  -3.55   -.83 
1960 01  -2.51  -9.09  -5.80 
1960 02   4.04  -2.95   0.54 
1960 03   9.18  -1.04   4.07 
1960 04  14.50   1.67   8.08 
1960 05  17.86   3.94  10.90 
1960 06  24.81   8.41  16.61 
1960 07  32.34  13.78  23.06 
1960 08  25.50  10.52  18.01 
1960 09  24.37   8.03  16.20 
1960 10  16.20   3.87  10.03 
1960 11   6.69  -1.59   2.55 
1960 12   0.35  -4.90  -2.27 
1961 01   2.20  -3.52   -.66 
1961 02   6.99   0.06   3.52 
1961 03   9.80   0.26   5.03 
1961 04  14.43   0.98   7.70 
1961 05  19.40   5.84  12.62 
1961 06  28.19  10.77  19.48 
1961 07  30.80  13.82  22.31 
1961 08  32.00  14.89  23.44 
1961 09  21.16   5.61  13.38 
1961 10  14.44   1.35   7.89 
