See forum thread here:

his is significant as Iodine 131 has a short half life and is only emitted in large quantities in a nuclear accident.

Possible detection of washout by radmon station Simomax?

Or a nuclear test?? (thx Bethsalem)

GK-B5 SI-180G tube in Gothenburg / Sweden
'The reactor at the Institute for Energy Technology in Halden, southern Norway, spilled radioactive iodine isotopes on Monday, according to the Norwegian Radiation Protection Authority (NPRA).

"The radioactive leak was due to a technical failure during treatment of the fuel in the reactor hall. Emissions are low,” the NRPA said.

Staff at the facility were evacuated immediately after the incident but the NPRA was not informed until the following day.'
Worcester, MA. USAGMC-320+V4M4011Counter is set up next to a north facing window, opened occasionally
Welcome to fell in Hronske Kosihy, Slovakia.
fell has a RH electronics DIY counter with SBM-20 tube

Welcome to EricFu in Pottendorf, buy meridia online, Baden, Austria.
EricFu has a GQ GMC-320 with M4011 tube.

Welcome to hexxter in Virgo Supercluster/Milky May/Orionarm/Sun System/Earth/Central Europe/Germany/Bavaria/Kallmünz (haha)
hexxter has a BroHogan GK-RadMon with SBM-20 tube.

Welcome to westerbergwetter in Osnabrück, Germany.
westerbergwetter has a GMC-320 plus Raspberry PI2 and SBM-20 tube.

Great to have you all here at :D