Geiger Readings for December 15, 2013

Ambient office = 83 nanosieverts per hour
 
Ambient outside = 102 nanosieverts per hour
 
Soil exposed to rain water = 102 nanosieverts per hour
 
Red seedless grapes from Top Foods = 94 nanosieverts per hour
 
Tap water = 81 nanosieverts per hour
 
Filtered water = 70 nanosieverts per hour