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\name{smacker}
\alias{smacker}
\title{Mackerel data from a Spanish survey}
\description{
These data were recorded by a Spanish survey, as part of a multi-country
survey of the abundance of mackerel eggs off the coast of north-western
Europe, in 1992.
The variables are:
\tabular{ll}{
\code{Density} \tab egg density \cr
\code{smack.lat} \tab latitude of sampling position \cr
\code{smack.long} \tab longitude of sampling position \cr
\code{smack.depth} \tab bottom depth \cr
\code{Temperature} \tab surface temperature \cr
\code{D200} \tab distance from the 200m depth contour line
}
Background to the survey and the data are provided by Watson et al. (1992), Priede and Watson (1993) and Priede et al (1995). Borchers et al (1997) describe an analysis of the data.
}
\keyword{smooth}
\keyword{regression}
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