1955 02  -3.15 -19.11 -11.13 
1955 03  -2.94 -16.75  -9.84 
1955 04   9.10  -4.02   2.54 
1955 05  14.58   0.75   7.66 
1955 06  21.15   5.89  13.52 
1955 07  22.20 -99.99 -99.99 
1955 08  22.27   7.35  14.81 
1955 09  14.93   1.81   8.37 
1955 10  10.41  -4.03   3.18 
1955 11 -10.98 -22.97 -16.97 
1955 12 -12.79 -22.64 -17.71 
1956 01 -19.33 -24.35 -21.84 
1956 02  -6.96 -20.77 -13.86 
1956 03   -.35 -12.47  -6.41 
1956 04   7.51  -5.76   0.87 
1956 05  20.04   2.66  11.35 
1956 06  20.16   6.18  13.17 
1956 07  22.93   8.60  15.76 
1956 08  21.35   7.97  14.66 
1956 09  15.19   3.08   9.13 
1956 10   8.81  -5.34   1.73 
1956 11   6.86  -6.26   0.29 
1956 12  -6.74 -16.54 -11.64 
1957 01 -11.18 -20.37 -15.78 
1957 02  -6.23 -19.70 -12.96 
1957 03   1.84 -12.30  -5.23 
1957 04  10.45  -3.39   3.52 
1957 05  16.81   3.15   9.97 
1957 06  19.65   5.07  12.36 
1957 07  21.32   6.98  14.15 
1957 08  18.83   5.74  12.28 
1957 09  18.60   4.35  11.47 
1957 10 -99.99  -5.10 -99.99 
1957 11 -99.99  -5.79 -99.99 
1957 12  -3.71 -15.39  -9.55 
1958 01  -2.30 -14.13  -8.21 
1958 02  -9.68 -20.69 -15.19 
1958 03  -1.96 -12.85  -7.40 
1958 04   9.66  -2.20   3.73 
1958 05  20.04   3.15  11.59 
1958 06  19.95   6.04  12.99 
1958 07  23.05   7.75  15.40 
1958 08  23.08   7.04  15.06 
1958 09  15.41   2.28   8.84 
1958 10  12.99  -2.76   5.11 
1958 11   1.61 -11.07  -4.73 
1958 12  -5.07 -16.07 -10.57 
1959 01 -16.09 -23.64 -19.86 
1959 02  -3.34 -19.84 -11.59 
1959 03   6.36  -7.43   -.53 
1959 04  11.46  -4.46   3.50 
1959 05  14.72   -.65   7.03 
1959 06  18.32   5.79  12.05 
1959 07  23.88   7.62  15.75 
1959 08  17.79   5.36  11.58 
1959 09  13.86   2.02   7.93 
1959 10 -99.99  -2.20 -99.99 
