Ambient office = 73 nanosieverts per hour

 

Ambient outside = 104 nanosieverts per hour

 

Soil exposed to rain water = 103 nanosieverts per hour

 

Iceberg lettuce from Top Foods = 79 nanosieverts per hour

 

Tap water = 78 nanosieverts per hour

 

Filtered water = 66 nanosieverts per hour