Ambient office = 114 nanosieverts per hour

 

Ambient outside = 122 nanosieverts per hour

 

Soil exposed to rain water = 128 nanosieverts per hour

 

Redleaf lettuce from Top Foods = 1222 nanosieverts per hour

 

Tap water = 74 nanosieverts per hour

 

Filtered water = 60 nanosieverts per hour