The format is:
Time-Series [1:31] from 1905 to 1935: 50 20 20 22 27 50 55 78 70 59 ...
Details
These are yearly hare abundances for the main drainage of
the Hudson Bay, based
on trapper questionnaires.
References
Stenseth, N. C., Falck, W., Bjornstad, O. N. and Krebs. C. J. (1997)
Population regulation in snowshoe hare and Canadian lynx: Asymmetric
food web configurations between hare and lynx. Proc. Natl. Acad. Sci.,
94, 5147-5152.