Geiger Readings for December 16, 2013

Ambient office = 91 nanosieverts per hour
 
Ambient outside = 93 nanosieverts per hour
 
Soil exposed to rain water = 103 nanosieverts per hour
 
Red seedless grapes from Top Foods = 126 nanosieverts per hour
 
Tap water = 168 nanosieverts per hour
 
Filtered water = 132 nanosieverts per hour