Ambient office = 67 nanosieverts per hour

 

Ambient outside = 68 nanosieverts per hour

 

Soil exposed to rain water = 101 nanosieverts per hour

 

Iceberg lettuce from Top Foods = 61 nanosieverts per hour

 

Tap water = 103 nanosieverts per hour

 

Filtered water = 87 nanosieverts per hour