TYB
https://www.uradmonitor.com/
This is a pretty good network, and you can choose date ranges to display.
.60 uSv/h, is that bad?
https://www.uradmonitor.com/tools/dashboard-04/?open=110000E6#
https://www.uradmonitor.com/tools/dashboard-04/?open=510000AC
https://www.uradmonitor.com/tools/dashboard-04/?open=51000069
https://www.uradmonitor.com/tools/dashboard-04/?open=82000118
https://www.uradmonitor.com/tools/dashboard-04/?open=1200001D