PM10 {truncSP}

Air pollution data

Description

The data are a subsample of 500 observations from a data set that originates in a study where air pollution at a road is related to traffic volume and meteorological variables, collected by the Norwegian Public Roads Administration. The response variable consists of hourly values of the logarithm of the concentration of PM10 (particles), measured at Alnabru in Oslo, Norway, between October 2001 and August 2003. (Source: Statlib)

Usage

data(PM10)

Format

A data frame with 500 observations on the following 8 variables.

PM10

Hourly values of the logarithm of the concentration of PM10 (particles)

cars

The logarithm of the number of cars per hour

temp

Temperature 2 meters above ground (degree C)

wind.speed

Wind speed (meters/second)

temp.diff

The temperature difference between 25 and 2 meters above ground (degree C)

wind.dir

Wind direction (degrees between 0 and 360)

hour

Hour of day

day

Day number from October 1. 2001

Source

http://lib.stat.cmu.edu/, dataset PM10, submitted by Magne Aldrin on July 28, 2004

References

Aldrin, M. (2006) Improved predictions penalizing both slope and curvature in additive models, Computational Statistics & Data Analysis, 50, pp 267–284

Examples

data(PM10)