1916 01 99.99  17.98 -99.99 
1916 02 26.79  17.94  22.36 
1916 03 26.17  18.32  22.24 
1916 04 26.00  18.81  22.40 
1916 05 25.92  19.36  22.64 
1916 06 26.05  19.54  22.80 
1916 07 26.79  20.02  23.40 
1916 08 26.17  19.65  22.91 
1916 09 26.22  19.95  23.09 
1916 10 26.34  19.76  23.05 
1916 11 24.77  19.32  22.04 
1916 12 23.80  18.42  21.11 
1917 01 24.18  17.21  20.70 
1917 02 24.88  17.15  21.01 
1917 03 23.78  17.95  20.87 
1917 04 24.66  18.16  21.41 
1917 05 26.07  18.64  22.35 
1917 06 25.84  19.98  22.91 
1917 07 26.78  19.96  23.37 
1917 09 28.25  20.50  24.37 
1917 10 99.99  20.18 -99.99 
1917 11 26.13  19.50  22.81 
1917 12 25.91  18.93  22.42 
1918 01 24.41  17.90  21.15 
1918 02 23.66  17.16  20.41 
1918 03 99.99  17.04 -99.99 
1918 04 22.99  18.17  20.58 
1918 05 24.59  18.96  21.78 
1918 06 25.99  19.54  22.76 
1918 07 99.99  20.72 -99.99 
1918 09 27.72  21.00  24.36 
1918 10 27.54  20.71  24.12 
1918 11 26.28  19.40  22.84 
1918 12 23.94  18.58  21.26 
1919 01 23.99  17.18  20.58 
1919 02 23.79  17.31  20.55 
1919 03 24.09  17.51  20.80 
1919 04 25.39  18.42  21.90 
1919 05 25.59  18.95  22.27 
1919 06 27.13 -99.99 -99.99 
1919 07 26.89  20.24  23.56 
1919 08 27.22  20.81  24.01 
1919 09 27.58  19.95  23.76 
1919 10 27.34 -99.99 -99.99 
1919 11 26.70  18.95  22.82 
1919 12 26.53  18.23  22.38 
