Geiger Readings for Feb 23, 2015

Ambient office = 103 nanosieverts per hour
 
Ambient outside = 90 nanosieverts per hour
 
Soil exposed to rain water = 97 nanosieverts per hour
 
Redleaf lettuce from Central Market = 99 nanosieverts per hour
 
Tap water = 82 nanosieverts per hour
 
Filtered water = 72 nanosieverts per hour