Gerking data frame has 14 rows and 3 columns.
Marked and released sunfish in an Indiana lake for 14 days by Gerking (1953) as reported by Krebs (1989, Table 2.1).
This data frame contains the following columns:
column of number of captures (column names is unnecessary).
column of number of recaptures (column name is unnecessary).
column of number of newly marked animal (column name is unnecessary).
Krebs, C. J. 1989. Ecological Methodologies. Harper and Row, New York, NY. 654 p.