Ambient office = 120 nanosieverts per hour

 

Ambient outside = 130 nanosieverts per hour

 

Soil exposed to rain water = 123 nanosieverts per hour

 

Redleaf lettuce from Top Foods = 82 nanosieverts per hour

 

Tap water = 123 nanosieverts per hour

 

Filtered water = 103 nanosieverts per hour