Geiger Readings for April 23, 2015

Ambient office = 113 nanosieverts per hour

 
Ambient outside = 100  nanosieverts per hour
 
Soil exposed to rain water = 105 nanosieverts per hour
 
Redleaf lettuce from Central Market = 145  nanosieverts per hour
 
Tap water = 66 nanosieverts per hour
 
Filtered water = 56 nanosieverts per hour