Ambient office = 73 nanosieverts per hour

 

Ambient outside = 81 nanosieverts per hour

 

Soil exposed to rain water = 95 nanosieverts per hour

 

Iceberg lettuce from Top Foods = 59 nanosieverts per hour

 

Tap water = 93 nanosieverts per hour

 

Filtered water = 88 nanosieverts per hour