Ambient office = 117 nanosieverts per hour

 

Ambient outside = 105 nanosieverts per hour

 

Soil exposed to rain water = 117 nanosieverts per hour

 

Iceberg lettuce from Top Foods = 105 nanosieverts per hour

 

Tap water = 100 nanosieverts per hour

 

Filtered water = 87 nanosieverts per hour