Geiger Counter Readings in Seattle, WA on August 23, 2012

Ambient office = .117 microsieverts per hour

Tap water = .133 microsieverts per hour

Filtered water = .128 microsieverts per hour

Ear of corn from local produce stand = .095 microsieverts per hour

Ambient outside = .122 microsieverts per hour

Soil exposed to rain = .093 microsieverts per hour