═════════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═══════ │1880.│1881.│1882.│1883.│1884.│1885.│1886.│1887.│1888.│1889.│Ten-yr. │ │ │ │ │ │ │ │ │ │ │ av. ─────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────── January │ 1.25│ .98│ 1.30│ .99│ .92│ .79│ .81│ .79│ .77│ .96│ .956 February │ 1.23│ .98│ 1.27│ 1.08│ .93│ .77│ .81│ .75│ .77│ 1.01│ .960 March │ 1.21│ 1.01│ 1.30│ 1.07│ .88│ .77│ .79│ .77│ .76│ 1.00│ .956 April │ 1.11│ 1.02│ 1.35│ 1.07│ .85│ .85│ .76│ .80│ .77│ .91│ .949 May │ 1.15│ 1.04│ 1.27│ 1.11│ .90│ .88│ .76│ .85│ .86│ .86│ .968 June │ .97│ 1.10│ 1.30│ 1.06│ .87│ .87│ .74│ .81│ .82│ .83│ .937 July │ .92│ 1.14│ 1.30│ 1.01│ .82│ .88│ .77│ .70│ .82│ .81│ .917 August │ .89│ 1.29│ 1.09│ 1.02│ .80│ .84│ .76│ .68│ .88│ .78│ .903 September│ .91│ 1.28│ 1.01│ .96│ .76│ .82│ .74│ .69│ 1.45│ .79│ .941 October │ .98│ 1.36│ .95│ .93│ .76│ .88│ .72│ .71│ 1.11│ .80│ .920 November │ 1.06│ 1.28│ .93│ .96│ .73│ .87│ .75│ .74│ 1.09│ .80│ .921 December │ 1.01│ 1.27│ .93│ .97│ .73│ .86│ .77│ .77│ 1.01│ .79│ .911 ─────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────── Yearly │1.057│1.145│1.175│1.019│ .829│ .840│ .765│ .755│ .926│ .862│ .936 aver. │ │ │ │ │ │ │ │ │ │ │ ─────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴───────