Lin and Evans (1980) reported fecal coliform measures (organisms per 100 ml) from the
Illinois River taken between 1971 and 1976. The object
Lin.Evans.80.df is a
small subset of these data that were reported by Helsel and Hirsch (1992, p.162).
A data frame with 24 observations on the following 2 variables.
a numeric vector of fecal coliform measure (organisms per 100 ml).
an ordered factor indicating the season of collection
Helsel, D.R., and R.M. Hirsch. (1992). Statistical Methods in Water Resources Research. Elsevier, New York, NY, p.162.
Lin, S.D., and R.L. Evans. (1980). Coliforms and fecal streptococcus in the Illinois River at Peoria, 1971-1976. Illinois State Water Survey Report of Investigations No. 93. Urbana, IL, 28pp.