Geiger Counter Readings in Seattle, WA on August 12, 2012

Ambient office = .132 microsieverts per hour

Tap water = .117 micosieverts per hour

Filtered water = .111 micosieverts per hour

Packaged dried black beans from local grocery store = .087 micosieverts per hour

Ambient outside = .085 micosieverts per hour

Soil exposed to rain = .081 micosieverts per hour