airquality               package:base               R Documentation

New York Air Quality Measurements

Description:

     Daily air quality measurements in New York, May to September 1973.

Usage:

     data(airquality)

Format:

     A data frame with 154 observations on 6 variables.

       `[,1]'  `Ozone'    numeric  Ozone (ppb)
       `[,2]'  `Solar.R'  numeric  Solar R (lang)
       `[,3]'  `Wind'     numeric  Wind (mph)
       `[,4]'  `Temp'     numeric  Temperature (degrees F)
       `[,5]'  `Month'    numeric  Month (1-12)
       `[,6]'  `Day'      numeric  Day of month (1-31)

Details:

     Daily readings of the following air quality values for May 1, 1973
     (a Tuesday) to September 30, 1973.

        *  `Ozone': Mean ozone in parts per billion from 1300 to 1500
           hours at Roosevelt Island

        *  `Solar.R': Solar radiation in Langleys in the frequency band
           4000-7700 Angstroms from 0800 to 1200 hours at Central Park

        *  `Wind': Average wind speed in miles per hour at 0700 and
           1000 hours at LaGuardia Airport

        *  `Temp': Maximum daily temperature in degrees Fahrenheit at
           La Guardia Airport.

Source:

     The data were obtained from the New York State Department of
     Conservation (ozone data) and the National Weather Service
     (meteorological data).

References:

     Chambers, J. M., Cleveland, W. S., Kleiner, B. and Tukey, P. A.
     (1983) Graphical Methods for Data Analysis. Belmont, CA:
     Wadsworth.

Examples:

     data(airquality)
     pairs(airquality, panel = panel.smooth, main = "airquality data")

