Assertion: ozone | /r/HasProperty | detectable
Facets:
value: from around 0.01 ppm
type: OTHER
value: to humans
type: TRANSITIVE-OBJECT
Source sentences:
text: Ozone smells similar to chlorine and is detectable by many people at concentrations of as little as 10 ppb (parts per billion) in the air.
text: It is detectable to humans from around 0.01 ppm.