═════════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═════╤═══════ │1870.│1871.│1872.│1873.│1874.│1875.│1876.│1877.│1878.│1879.│Ten-yr. │ │ │ │ │ │ │ │ │ │ │ av. ─────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────── January │ .42│ .43│ .34│ .27│ .42│ .55│ .31│ .35│ .24│ .20│ .353 February │ .41│ .49│ .34│ .28│ .44│ .55│ .31│ .35│ .24│ .21│ .362 March │ .39│ .52│ .33│ .28│ .45│ .56│ .33│ .33│ .24│ .23│ .366 April │ .45│ .51│ .33│ .29│ .47│ .60│ .32│ .37│ .24│ .22│ .380 May │ .51│ .50│ .39│ .34│ .49│ .65│ .30│ .42│ .26│ .27│ .413 June │ .52│ .51│ .41│ .31│ .48│ .60│ .30│ .46│ .24│ .32│ .415 July │ .51│ .50│ .29│ .31│ .49│ .53│ .29│ .31│ .25│ .31│ .379 August │ .42│ .32│ .30│ .29│ .44│ .48│ .31│ .25│ .23│ .24│ .328 September│ .38│ .32│ .27│ .31│ .46│ .38│ .33│ .24│ .20│ .24│ .313 October │ .38│ .33│ .24│ .32│ .50│ .36│ .33│ .23│ .19│ .29│ .317 November │ .41│ .33│ .23│ .32│ .50│ .33│ .32│ .25│ .20│ .32│ .341 December │ .41│ .34│ .26│ .39│ .55│ .32│ .34│ .25│ .20│ .35│ .341 ─────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────── Yearly │ .434│ .425│ .311│ .309│ .474│ .493│ .316│ .318│ .228│ .267│ .357 aver. │ │ │ │ │ │ │ │ │ │ │ ─────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴───────