Geiger Readings for January 21, 2013

Ambient office = 81 nanosieverts per hour
 
Ambient outside = 133 nanosieverts per hour
 
Soil exposed to rain water = 133 nanosieverts per hour
 
Romaine lettuce from Top Foods = 87 nanosieverts per hour
 
Tap water = 106 nanosieverts per hour
 
Filtered water = 99 nanosieverts per hour