Geiger-Mueller counter in Uithoorn, NL

Geiger kit data, GK-B5 kit,SBM-20 tube
  geiger, radiation, dose, cpm, gk-b5

Field 1 Chart
Field 2 Chart
Field 3 Chart
Field 4 Chart
Field 5 Chart
Field 6 Chart
Field 7 Chart
Field 8 Chart
CPM
Air pressure
Temperature