Geiger Readings for Jul 20, 2015

Ambient office = 85 nanosieverts per hour
 
Ambient outside = 56  nanosieverts per hour
 
Soil exposed to rain water = 55 nanosieverts per hour
 
Vine ripened tomato lettuce from Central Market = 136 nanosieverts per hour
 
Tap water = 90 nanosieverts per hour
 
Filtered water = 83 nanosieverts per hour