Geiger Readings for December 21, 2014

Ambient office = 67  nanosieverts per hour
 
Ambient outside = 117  nanosieverts per hour
 
Soil exposed to rain water = 111 nanosieverts per hour
 
Iceberg lettuce  from Central Market = 120  nanosieverts per hour
 
Tap water = 103  nanosieverts per hour
 
Filtered water = 89 nanosieverts per hour