Geiger Readings for Apr 25, 2018

Ambient office  = 137 nanosieverts per hour

Ambient outside = 93 nanosieverts per hour

Soil exposed to rain water = 93 nanosieverts per hour

Red onion from Central Market = 158 nanosieverts per hour

Tap water = 77 nanosieverts per hour

Filter water = 66 nanosieverts per hour