

   NNeeww YYoorrkk AAiirr QQuuaalliittyy MMeeaassuurreemmeennttss

        data(airquality)

   FFoorrmmaatt::

        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

   DDeessccrriippttiioonn::

        Daily readings of the following air quality values for
        May 1, 1973 (a Tuesday) to September 30, 1973: mean
        ozone in parts per billion from 1300 to 1500 hours at
        Roosevelt Island, solar radiation (Solar.R) in Langleys
        in the frequency band 4000-7700 Angstroms from 0800 to
        1200 hours at Central Park, Average wind speed (Wind)
        in miles per hour at 0700 and 1000 hours at LaGuardia
        Airport, maximum daily temperature (Temp) in degrees
        Fahrenheit at La Guardia Airport.

   SSoouurrccee::

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

   RReeffeerreenncceess::

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

