paris {logNormReg}

PM2.5 and PM10 measurements in Paris in 2019

Description

Hourly time series of PM2.5 and PM10 measurements in Paris in 2019

Usage

data("paris")

Format

A data frame with 647 observations on the following 4 variables.

utc

date and time of measurements

pm25

The PM2.5 measurements

pm10

The PM10 measurements

hours

numeric, the measurement hours

Details

Ambient particulate matter measurements (PM 2.5 and PM 10) measured by reference-grade instruments for Paris - Centre, hourly measurements for July 2019. Non-physical measurements (zero values and outliers with PM2.5 greater than 2xPM10) were removed, as mass of PM2.5 is a fraction of mass of PM10 by definition.

Source

European Environmental Agency, through Open AQ (https://openaq.org/#/location/4146). Thanks to Vito Ilacqua (EPA) for pointing out that.

Examples

data(paris)
plot(pm10~pm25, data=paris)
o<-lm(pm10~pm25, data=paris) #negative intercept! it's meaningless..
o1<-lognlm(pm10 ~ pm25, data=paris, lik=TRUE)
abline(coef=coef(o),  col=2)
abline(coef=coef(o1), col=3)