fields (version 1.2)

ozone: Data set of ozone measurements at 20 Chicago monitoring stations.

Description

The ozone data is a list of components, x and y. x component is longitude and latitude position of each of the 20 Chicago monitoring stations, y is the average daily ozone values over the time period 6/3/87-8/30/87 and lon.lat is the longitude-latitude locations of the data.

Usage

data(ozone)

Arguments

x

Longitude-latitude postion of monitoring stations.

y

Average daily ozone values over 1987 summer.

format

This data set is a list containing the following components:

source

AIRS, the EPA air quality data base.

See Also

Tps, Krig

Examples

fit<- Tps(ozone$x, ozone$y) 
# fitting a surface to ozone measurements. 
surface( fit, type="I")