\HeaderA{npr1}{US Naval Petroleum Reserve No. 1 data}{npr1}
\keyword{datasets}{npr1}
\begin{Description}\relax
Data on the locations, porosity and permeability (a measure of oil flow)
on 104 oil wells in the US Naval Petroleum Reserve No. 1 in California.
\end{Description}
\begin{Usage}
\begin{verbatim}
npr1
\end{verbatim}
\end{Usage}
\begin{Format}\relax
This data frame contains the following columns:
\describe{
\item[\code{x, y}] x and y coordinates, in miles from an arbitrary origin.

\item[\code{perm}] permeability in milli-Darcies.

\item[\code{por}] porosity (\%).

}
\end{Format}
\begin{Source}\relax
Maher, J.C., Carter, R.D. and Lantz, R.J. (1975)
Petroleum geology of Naval Petroleum Reserve No. 1, Elk Hills,
Kern County, California.
\emph{USGS Professional Paper} \bold{912}.
\end{Source}
\begin{References}\relax
Venables, W. N. and Ripley, B. D. (2002)
\emph{Modern Applied Statistics with S.} Fourth edition.  Springer.
\end{References}

