Ambient office = 111 nanosieverts per hour

 

Ambient outside = 67 nanosieverts per hour

 

Soil exposed to rain water = 79 nanosieverts per hour

 

Romaine lettuce from Top Foods = 87 nanosieverts per hour

 

Tap water = 99 nanosieverts per hour

 

Filtered water = 76 nanosieverts per hour