A subset of 500 hourly observations collected by the Norwegian Public Roads Administration at Alnabru in Oslo, Norway, between October 2001 and August 2003.
data(NO2)
A data frame containing 500 observations on the following variables.
no2 | Concentration of NO2, on log scale. |
cars | Traffic volume of the hour, on log scale. |
temp | Temperature 2 meters above ground, in Celsius. |
wind | wind speed, meters/second. |
temp2 | Temperature difference between 25 and 2 meters above ground, in Celsius. |
wind2 | Wind direction, in degrees between 0 and 360. |