airquality               package:base               R Documentation

_N_e_w _Y_o_r_k _A_i_r _Q_u_a_l_i_t_y _M_e_a_s_u_r_e_m_e_n_t_s

_D_e_s_c_r_i_p_t_i_o_n:

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

_U_s_a_g_e:

     data(airquality)

_F_o_r_m_a_t:

     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)

_D_e_t_a_i_l_s:

     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.

_S_o_u_r_c_e:

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

_R_e_f_e_r_e_n_c_e_s:

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

_E_x_a_m_p_l_e_s:

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

