Geiger Counter Readings in Seattle, WA on July 2, 2012

Ambient office = .121 microsieverts per hour

Tap water = .065 micosieverts per hour

Filtered water = .054 micosieverts per hour

Asparagus from supermarket = .107 micosieverts per hour

Ambient outside = .135 micosieverts per hour

Soil exposed to rain = .150 micosieverts per hour