Ambient office  = 70 nanosieverts per hour

Ambient outside = 100 nanosieverts per hour

Soil exposed to rain water = 87 nanosieverts per hour

Iceberg lettuce from Central Market = 108 nanosieverts per hour

Tap water = 95 nanosieverts per hour

Filtered water = 81 nanosieverts per hour

Dover sole – Caught in USA = 98 nanosieverts per hour