mooibroekd

After some extensive testing I still found differences between the intensity of the plots when I provide the `Pval` value myself instead of calculating it from the data. I believe...

https://github.com/davidcarslaw/openairmaps/issues/37#issuecomment-1494089570 This would also allow the change of the line type of the radial lines, as defined in lines 1138 - 1143 of the `openair::polarPlot` function by setting the `lty=1`.