More than 97 million people live in areas that do not yet meet the health-based 1-hour ozone standard (based on 1997-1999 data).
395025
In areas that do not yet meet the health-based 1-hour ozone standard, based on 1997-1999 data, 97 million people still live.
395026
More than 177 million people live in areas, that do not yet meet the health-based 1-hour ozone standard.