Ambient office = 87 nanosieverts per hour

 

Ambient outside = 97 nanosieverts per hour

 

Soil exposed to rain water = 86 nanosieverts per hour

 

Romaine lettuce from Top Foods = 72 nanosieverts per hour

 

Tap water = 89 nanosieverts per hour

 

Filtered water = 68 nanosieverts per hour