Ambient office = 113 nanosieverts per hour

 

Ambient outside = 60 nanosieverts per hour

 

Soil exposed to rain water = 82 nanosieverts per hour

 

Redleaf lettuce from Top Foods = 99 nanosieverts per hour

 

Tap water = 81 nanosieverts per hour

 

Filtered water = 66 nanosieverts per hour