Ambient office = 96 nanosieverts per hour

 

Ambient outside = 74 nanosieverts per hour

 

Soil exposed to rain water = 80 nanosieverts per hour

 

Redleaf lettuce from Top Foods = 102 nanosieverts per hour

 

Tap water = 100 nanosieverts per hour

 

Filtered water = 82 nanosieverts per hour