\HeaderA{pressure}{Vapor Pressure of Mercury as a Function of Temperature}{pressure}
\keyword{datasets}{pressure}
\begin{Description}\relax
Data on the relation between temperature in degrees Celsius and vapor
pressure of mercury in millimeters (of mercury).
\end{Description}
\begin{Usage}
\begin{verbatim}pressure\end{verbatim}
\end{Usage}
\begin{Format}\relax
A data frame with 19 observations on 2 variables.
\Tabular{rlll}{
[, 1] & temperature & numeric & temperature (deg C)\\{}
[, 2] & pressure    & numeric & pressure (mm)
}
\end{Format}
\begin{Source}\relax
Weast, R. C., ed. (1973)
\emph{Handbook of Chemistry and Physics}.
CRC Press.
\end{Source}
\begin{References}\relax
McNeil, D. R. (1977)
\emph{Interactive Data Analysis}.
New York: Wiley.
\end{References}
\begin{Examples}
\begin{ExampleCode}
require(graphics)
plot(pressure, xlab = "Temperature (deg C)",
     ylab = "Pressure (mm of Hg)",
     main = "pressure data: Vapor Pressure of Mercury")
plot(pressure, xlab = "Temperature (deg C)",  log = "y",
     ylab = "Pressure (mm of Hg)",
     main = "pressure data: Vapor Pressure of Mercury")
\end{ExampleCode}
\end{Examples}

