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Ambient office = 100 nanosieverts per hour

 

Ambient outside = 112 nanosieverts per hour

 

Soil exposed to rain water = 89 nanosieverts per hour

 

Iceberg lettuce from Top Foods = 78 nanosieverts per hour

 

Tap water = 76 nanosieverts per hour

 

Filtered water = 69 nanosieverts per hour