Usually, when using timevariation function for variation in pollutant concentration with time in openair R package, the hour of the day (on the x axis) spans from 0:00Hr to 23:00Hr.
For example;
timeVariation(filter(Zan), pollutant = "PM2.5", ylab = "PM2.5 (ug/m3)")
But, I need to plot a graph indicating the time frame from 6:00Hr to 5:00Hr, please what code can I use for it. Can anyone help me out.