The changing scales and meaning while zooming in and out makes it hard to derive conclusion from these measurements.
Sometimes it looks like somebody just used a more sensitive or uncalibrated device or is carrying a nuclear warhead around during an entire route of measuring.
Yeah, and I was hoping that you could still look at high-level averaging over a country ("maybe the bad data will average out") but when I looked at a few hotspots it appears that those all came down to a couple uncalibrated-looking devices.
Not very useful or interesting in its current form, unfortunately.
This is a radiation map of Australia: https://www.ga.gov.au/bigobj/GA13928.pdf ( gridded data available for d/load )
Sometimes it looks like somebody just used a more sensitive or uncalibrated device or is carrying a nuclear warhead around during an entire route of measuring.
Not very useful or interesting in its current form, unfortunately.