Ambient office = 108 nanosieverts per hour

 

Ambient outside = 64 nanosieverts per hour

 

Soil exposed to rain water = 70 nanosieverts per hour

 

Redleaf lettuce from Top Foods = 82 nanosieverts per hour

 

Tap water = 106 nanosieverts per hour

 

Filtered water = 101 nanosieverts per hour