Geiger Counter Readings in Seattle, WA on July 4, 2012

Ambient office = .061 microsieverts per hour

Tap water = .119 micosieverts per hour

Filtered water = .103 micosieverts per hour

Sliced almonds from supermarket = .090 micosieverts per hour

Ambient outside = .060 micosieverts per hour

Soil exposed to rain = .067 micosieverts per hour