Monthly estimated total phosphorus mass (mg) within a water column at two different stations for the 5-year time period October 1984 to September 1989 from a study on phosphorus concentration conducted in the Chesapeake Bay.
A data frame with 60 observations on the following 4 variables.
a numeric vector of phosphorus concentrations at station CB3.1
a numeric vector phosphorus concentrations at station CB3.3e
a factor indicating the month the observation was taken
a numeric vector indicating the year an observation was taken
Neerchal, N. K., and S. L. Brunenmeister. (1993). Estimation of Trend in Chesapeake Bay Water Quality Data. In Patil, G.P., and C.R. Rao, eds., Handbook of Statistics, Vol. 6: Multivariate Environmental Statistics. North-Holland, Amsterdam, Chapter 19, 407-422.