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Ambient office = 135 nanosieverts per hour

 

Ambient outside = 107 nanosieverts per hour

 

Soil exposed to rain water = 101 nanosieverts per hour

 

Baby Gold Potato from Top Foods = 65 nanosieverts per hour

 

Tap water = 92 nanosieverts per hour

 

Filtered water = 87 nanosieverts per hour