Log catch per unit effect of 200 mm or longer black crappies was recored 27 times over the course of 1996 on Swan Lake, Minnesota.
A data frame with 27 observations on the following 2 variables.
Number of days after June 16, 1996
log of the catch of 200 mm or longer black crappies per unit effort (WHAT IS THE BASE?)
Minnesota Department of Natural Resources
Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Problem 11.4.