1957 04   7.49  -7.26   0.11 
1957 05  14.65   0.09   7.37 
1957 06  19.20   1.03  10.12 
1957 07  26.03 -99.99 -99.99 
1957 08  27.02 -99.99 -99.99 
1957 09  21.69 -99.99 -99.99 
1957 10  11.67 -99.99 -99.99 
1957 11   0.26 -17.32  -8.53 
1957 12  -1.78 -17.99  -9.88 
1958 01  -2.84 -20.80 -11.82 
1958 02   3.29 -14.43  -5.57 
1958 03   0.86 -15.83  -7.48 
1958 04   6.40  -6.48  -0.03 
1958 05  20.34   -.87   9.73 
1958 06  21.11   1.52  11.31 
1958 07  24.55   0.44  12.49 
1958 08  27.47   0.62  14.04 
1958 09  21.39  -6.30   7.54 
1958 10  16.18 -12.06   2.06 
1958 11   3.37 -14.52  -5.57 
1958 12   0.86 -15.72  -7.43 
1959 01  -3.11 -16.32  -9.71 
1959 02   -.79 -17.35  -9.07 
1959 03   3.04 -13.76  -5.36 
1959 04   9.89 -10.26   -.18 
1959 05  11.66  -6.28   2.68 
1959 06  22.79   0.02  11.40 
1959 07  26.80   -.45  13.17 
1959 08  24.74  -1.16  11.78 
1959 09  17.21  -3.79   6.71 
1959 10  10.43  -7.06   1.68 
1959 11   3.65 -15.99  -6.17 
1959 12  -1.56 -19.65 -10.60 
1960 01  -5.08 -20.61 -12.84 
1960 02  -3.31 -19.90 -11.60 
1960 03   4.75 -13.29  -4.27 
1960 04  10.48  -5.69   2.39 
