Geiger Readings for Mar 18, 2015

Ambient office = 86 nanosieverts per hour
 
Ambient outside = 80 nanosieverts per hour
 
Soil exposed to rain water = 79 nanosieverts per hour
 
White potato   from Central Market = 86 nanosieverts per hour
 
Tap water = 80 nanosieverts per hour
 
Filtered water = 72 nanosieverts per hour