Geiger Readings for January 31, 2013

Ambient office = 106 nanosieverts per hour
 
Ambient outside = 79 nanosieverts per hour
 
Soil exposed to rain water = 79 nanosieverts per hour
 
Red seedless grapes from Top Foods = 91 nanosieverts per hour
 
Tap water = 129 nanosieverts per hour
 
Filtered water =109 nanosieverts per hour