Geiger Readings for January 20, 2014

Ambient office = 72  nanosieverts per hour
 
Ambient outside = 62  nanosieverts per hour
 
Soil exposed to rain water = 79 nanosieverts per hour
 
Crimini mushroom from Central Market = 147  nanosieverts per hour
 
Tap water = 79  nanosieverts per hour
 
Filtered water = 69 nanosieverts per hour