Data set of ozone measurements at 20 Chicago monitoring stations.
Arguments
x
|
Longitude-latitude postion of monitoring stations.
|
y
|
Average daily ozone values over 1987 summer.
|
SUMMARY
The ozone
data is a list of two components, x and y. The x
component is longitude and latitude position of each of the 20
Chicago monitoring stations. The y component is the average
daily ozone values over the time period 6/3/87-8/30/87."DATA
This data set is a list containing the following components:SOURCE
AIR, the EPA air quality data base.See Also
tps, krig, nnregExamples
tps(ozone$x, ozone$y) -> fit # fitting a surface to ozone measurements.
plot(fit) # plots fit and residuals