Geiger Readings for Jan 18, 2016

Ambient office = 98 nanosieverts per hour
 
Ambient outside = 106 nanosieverts per hour
 
Soil exposed to rain water = 96 nanosieverts per hour
 
Redleaf lettuce from Central Market = 88 nanosieverts per hour
 
Tap water = 73 nanosieverts per hour
 
Filtered water = 67 nanosieverts per hour