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Ambient office = 168 nanosieverts per hour

 

Ambient outside = 46nanosieverts per hour

 

Soil exposed to rain water = 44 nanosieverts per hour

 

Red onion from Top Foods = 89 nanosieverts per hour

 

Tap water = 102 nanosieverts per hour

 

Filtered water = 96 nanosieverts per hour