Ambient office = 128 nanosieverts per hour

Ambient outside = 39 nanosieverts per hour

Soil exposed to rain water = 39 nanosieverts per hour

Celery from Central Market = 164 nanosieverts per hour

Tap water = 84 nanosieverts per hour

Filtered water = 74 nanosieverts per hour

Dover sole – Caught in USA = 111 nanosieverts per hour