1928 07 34.12  21.81  27.96 
1928 08 32.91  22.67  27.79 
1928 09 31.65  22.50  27.07 
1928 10 30.65  19.77  25.21 
1928 11 26.71  13.93  20.32 
1928 12 25.30  10.22  17.76 
1929 01 27.30  12.49  19.89 
1929 02 28.33  14.27  21.30 
1929 03 29.49  15.49  22.49 
1929 04 32.33  15.40  23.86 
1929 05 32.93  18.34  25.63 
1929 06 32.75  20.19  26.47 
1929 07 33.39  20.69  27.04 
1929 08 34.86  21.71  28.28 
1929 09 33.05  21.97  27.50 
1929 10 29.59  17.49  23.54 
1929 11 28.87  15.90  22.38 
1929 12 25.48  10.98  18.23 
1930 01 27.34  13.32  20.33 
1930 02 27.74  12.63  20.18 
1930 03 25.87  11.71  18.79 
1930 04 28.72  16.04  22.38 
1930 05 31.78  18.57  25.17 
1930 06 30.22  19.70  24.96 
1930 07 33.90  20.99  27.44 
1930 08 32.77  20.19  26.48 
1930 09 32.21  20.83  26.52 
1930 10 28.74  16.94  22.84 
1930 11 25.28  12.96  19.12 
1930 12 21.83 -99.99 -99.99 
1931 01 21.97 -99.99 -99.99 
1931 02 23.11 -99.99 -99.99 
1931 04 26.46 -99.99 -99.99 
1931 05 30.79 -99.99 -99.99 
1931 06 35.59 -99.99 -99.99 
1931 07 34.93 -99.99 -99.99 
1931 08 32.95 -99.99 -99.99 
1931 09 31.23 -99.99 -99.99 
1931 10 29.45 -99.99 -99.99 
1931 11 27.06 -99.99 -99.99 
1931 12 28.80 -99.99 -99.99 
1932 01 26.97  13.08  20.02 
1932 02 30.07  13.84  21.95 
1932 04 30.42  13.56  21.99 
1932 05 32.31  16.93  24.62 
1932 06 33.18  20.93  27.06 
1932 07 32.86  21.31  27.08 
1932 08 30.46 -99.99 -99.99 
1932 09 99.99  21.81 -99.99 
