Distribution of selected quick low-lat and mid-lat PTs over azimuth and elevation. PTs recorded during the day are indicated with a circle, and those recorded at night are represented with a star. The colours show the median of the number of HEIMDALL candidates per PT before RFI excision. These values are an indication of the amount of RFI recorded per PT. Note, the upper end of the candidate count scale is truncated at the 0.9 quantile of the PTs’ candidate count, meaning that some ‘dark red’ PTs contain a factor of 10-100 more candidates than most PTs.