Table 10. Average, median, and range of gamma exposure rates, second quarter 2024, from EcoGamma network.

Station Location	Exposure Rate (µR/hr)
	Quarterly Average*	1 SD	Median	Range**
On-site Locations
Base of Howe^8	13.6	0.6	13.6	11.5 – 17.8
Big Lost River Rest Area^5	13.9	0.8	14.0	9.4 – 16.0
Rover^4	14.8	0.6	14.8	12.6 – 21.6
Sand Dunes Tower	14.0	0.6	14.0	12.1 – 19.7
Boundary Locations
Atomic City^7	13.6	0.6	13.6	11.3 – 16.9
Howe Met. Tower^1	12.8	0.5	12.7	11.1 – 14.9
Monteview^2	13.2	0.6	13.2	11.4 – 20.0
Mud Lake / Terreton	13.0	0.5	13.0	10.9 – 17.5
Distant Locations
Fort Hall	12.2	0.6	12.2	10.2 – 17.6
Idaho Falls^6	14.1	0.6	14.1	12.1 – 18.1
Big Southern Butte^3	17.3	1.7	16.6	14.3 – 23.3
*EcoGammas are sensitive electronic devices that can experience intermittent malfunctions and/or interference; this typically results in characteristic positive and/or negative data spikes. These aberrations are removed from the data set based on the judgement of the data analyst. **The range of background exposure rates from EcoGamma data collected to date is approximately 7 – 34 µR/hr. ^1No data from the EcoGamma at this location for 4/20 – 6/30/24. ^2No data from the EcoGamma at this location for 5/21 – 6/30/24. ^3No data from the Ecogamma at this location for 4/1 – 4/14/24 and 4/28 – 6/30/24. ^4No data from the EcoGamma at this location for 4/26 – 4/27/24, and 6/5 – 6/30/24. ^5The EcoGamma at this location was in operation intermittently, producing a comparatively small dataset. ^6No data from the EcoGamma at this location for 6/12 – 6/30/24. ^7 No data from the EcoGamma at this location for 6/26 – 6/30/24. ^8 No data from the EcoGamma at this location for 6/5 – 6/30/24.