Ambient office = 100 nanosieverts per hour

 

Ambient outside = 104 nanosieverts per hour

 

Soil exposed to rain water = 106 nanosieverts per hour

 

Organic Banana from Top Foods =  77 nanosieverts per hour

 

Tap water = 61 nanosieverts per hour

 

Filtered water = 42 nanosieverts per hour