Assertion: acid rain's ph | /r/CapableOf | average in area
Facets:
value: between 4.0
type: OTHER
value: annually
type: TEMPORAL
value: between 4.5
type: OTHER
Source sentences:
text: In these areas, the pH of precipitation can average between 4.0 and 4.5 annually, and the pH of individual rainstorms can sometimes drop below 3.0.