1918 05 19.56 -99.99 -99.99 
1918 06 29.50  13.52  21.51 
1918 07 30.61  15.21  22.91 
1918 08 26.62  13.45  20.03 
1918 09 26.11  12.93  19.52 
1918 10 17.25   7.40  12.32 
1918 11  8.02   1.02   4.52 
1918 12  3.89  -1.82   1.03 
1919 01  4.84  -3.31    .76 
1919 02  4.69  -1.21   1.74 
1919 03 11.83   2.02   6.92 
1919 04 17.42   4.00  10.71 
1919 05 21.17   7.91  14.54 
1919 06 25.94   9.57  17.75 
1919 07 31.85  16.20  24.02 
1919 08 31.15  16.37  23.76 
1919 09 22.69   9.26  15.97 
1919 10 14.28   3.86   9.07 
1919 11  7.93   -.55   3.68 
1919 12 -2.08  -9.08  -5.58 
1920 01   .90  -5.01  -2.05 
1920 02  5.20  -1.95   1.62 
1920 03 10.30    .81   5.55 
1920 04 13.58   2.55   8.06 
1920 05 19.77   5.59  12.68 
1920 06 24.08   9.93  17.00 
1920 07 31.65  15.07  23.36 
1920 08 29.81  14.93  22.37 
1920 09 23.85   9.96  16.90 
1920 10 15.68   5.53  10.60 
1920 11  7.74    .50   4.12 
1920 12  5.14   -.86   2.13 
1921 01  4.15  -2.13   1.01 
1921 02  5.93   -.38   2.77 
1921 03 11.43   1.84   6.63 
1921 04 15.17   2.92   9.04 
1921 05 21.00   7.48  14.24 
1921 06 27.15  12.70  19.92 
1921 07 30.01  13.55  21.78 
1921 08 30.14  14.81  22.47 
1921 09 20.86   8.08  14.47 
1921 10 18.21   7.47  12.84 
1921 11  8.05    .74   4.39 
1921 12  2.27  -4.17   -.95 
