Geiger Readings for December 28, 2014

Ambient office = 74  nanosieverts per hour
 
Ambient outside = 77  nanosieverts per hour
 
Soil exposed to rain water = 58 nanosieverts per hour
 
Redleaf lettuce  from Central Market = 88  nanosieverts per hour
 
Tap water = 93  nanosieverts per hour
 
Filtered water = 60 nanosieverts per hour