Geiger Readings for Sep 23, 2015

Ambient office = 89 nanosieverts per hour
 
Ambient outside = 75 nanosieverts per hour
 
Soil exposed to rain water = 87 nanosieverts per hour
 
Iceberg lettuce from Central Market = 81 nanosieverts per hour
 
Tap water = 109 nanosieverts per hour
 
Filtered water = 104 nanosieverts per hour