earth: ozone1 – R documentation

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earth

ozone1

Ozone readings in Los Angeles with incomplete cases removed

Description

Ozone readings in Los Angeles, with incomplete cases removed.

Format

A data frame with 330 observations on 10 variables.

`O3`	daily maximum of the hourly average ozone concentrations in Upland, CA
`vh`	500 millibar pressure height, measured at the Vandenberg air force base
`wind`	wind speed in mph at LAX airport
`humidity`	humidity in percent at LAX
`temp`	Sandburg Air Force Base temperature in degrees Fahrenheit
`ibh`	temperature inversion base height in feet
`dpg`	pressure gradient from LAX to Daggert in mm Hg
`ibt`	inversion base temperature at LAX in degrees Fahrenheit
`vis`	visibility at LAX in miles
`doy`	day of the year

Source

This dataset was copied from library(faraway) and the name changed to ozone1 to prevent a name clash. The data were originally made available by Leo Breiman who was a consultant on a project where the data were generated. Example analyses using these data may be found in Faraway and in Hastie and Tibshirani.

> ozone1
        O3   vh wind humidity temp  ibh dpg ibt vis doy
    1    3 5710    4       28   40 2693 -25  87 250  33
    2    5 5700    3       37   45  590 -24 128 100  34
    3    5 5760    3       51   54 1450  25 139  60  35
    ...
    330  1 5550    4       85   39 5000   8  44 100 390

References

Faraway (2005) Extending the Linear Model with R http://www.maths.bath.ac.uk/~jjf23

Hastie and Tibshirani (1990) Generalized Additive Models http://web.stanford.edu/~hastie/pub.htm