1931 01 -99.99 -13.24 -99.99 
1931 03   7.06  -9.64  -1.29 
1931 04  11.87  -5.38   3.24 
1931 05  18.27   -.79   8.74 
1931 06  22.71   3.44  13.07 
1931 07  29.20   6.79  17.99 
1931 08  27.92   4.31  16.11 
1931 09  19.68   1.30  10.49 
1931 10  15.92  -4.31   5.80 
1931 11   5.17 -12.02  -3.42 
1931 12   0.41 -17.29  -8.44 
1932 01 -99.99 -18.25 -99.99 
1932 02   2.86 -15.12  -6.13 
1932 03 -99.99  -8.39 -99.99 
1932 04  10.55  -5.07   2.74 
1932 05  16.24   -.17   8.03 
1932 06  23.12   3.60  13.36 
1932 07  26.74   4.67  15.70 
1932 08  25.97   3.50  14.73 
1932 09  23.35  -0.06  11.64 
1932 10  13.58  -5.53   4.02 
1932 11   8.87  -7.72   0.57 
1932 12  -1.86 -18.43 -10.14 
1933 01   0.29 -16.31  -8.00 
1933 02   -.37 -16.73  -8.55 
1933 03   6.00  -9.45  -1.72 
1933 04   9.91  -5.81   2.05 
1933 05  13.09  -2.62   5.23 
1933 06  24.27   3.83  14.05 
1933 07  29.73   6.26  17.99 
1933 08  26.69   3.82  15.25 
1933 09  20.75  -1.17   9.78 
1933 10  18.75  -2.98   7.88 
1933 11 -99.99  -7.46 -99.99 
1933 12   5.28  -7.30  -1.01 
1934 01   4.81  -9.87  -2.53 
1934 02   8.08  -6.32   0.87 
1934 03  12.92  -4.48   4.21 
1934 04  18.21  -2.19   8.01 
1934 05  22.47   -.15  11.16 
1934 06  22.46   2.54  12.50 
1934 07  29.43   5.27  17.35 
1934 08  29.59   4.36  16.97 
1934 10  17.79  -2.96   7.41 
1934 11   9.35  -6.36   1.49 
1934 12   1.99 -13.37  -5.69 
1935 01   1.67 -14.13  -6.23 
1935 02   4.19 -13.21  -4.51 
1935 03   4.39  -9.46  -2.53 
1935 04  10.99  -4.29   3.35 
1935 05  15.18  -1.10   7.04 
1935 06  22.98   1.70  12.34 
1935 07  27.85   3.87  15.86 
1935 08  28.02   2.66  15.34 
1935 09  24.64   -.29  12.17 
1935 10  15.14  -4.96   5.08 
1935 11   3.31 -11.47  -4.08 
1935 12   0.08 -17.02  -8.47 
1936 01   -.15 -15.09  -7.62 
1936 02   1.23 -14.55  -6.66 
1936 03   6.14 -10.52  -2.19 
1936 04  13.89  -4.13   4.88 
1936 05  21.61   -.21  10.70 
1936 06  23.05   3.85  13.45 
1936 07  29.39   6.65  18.02 
1936 08  26.57   4.46  15.52 
1936 09  22.58  -1.69  10.44 
1936 10  18.33  -5.71   6.31 
1936 11   7.80 -12.14  -2.17 
1936 12   1.98 -14.14  -6.08 
1937 01  -6.32 -22.10 -14.21 
1937 02   1.04 -16.45  -7.70 
1937 03   7.32  -9.72  -1.20 
1937 04   9.76  -5.95   1.90 
1937 05  20.77  -1.03   9.87 
1937 06  21.06   1.28  11.17 
1937 07  27.69   6.05  16.87 
1937 08  28.00   2.18  15.09 
1937 09  23.57  -0.06  11.75 
1937 10  17.07  -4.51   6.28 
1937 11   6.83  -8.79   -.98 
1937 12   2.18 -11.97  -4.89 
1938 01   1.13 -14.93  -6.90 
1938 02   2.66 -11.85  -4.59 
