Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1860 - 1873 1874 - 1940 1941 1942 - 1985 1986 - 1992 snow fell to the ground English
1860 - 1875 1876 - 1896 1897 - 1901 1902 - 1941 1942 - 2000 snow fell on the ground English

Run your own experiment! Raw data is available for download here.
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