20: Number of unhealthy ozone days in Connecticut during summer of 2005; 6 in 2004

20: Number of unhealthy ozone days in Massachusetts; 8 in 2004

8: Number of days in Rhode Island; 4 in 2004

4: Number of days in Maine; 1 in 2004

3: Number of days in New Hampshire; 4 in 2004

0: Number of days in Vermont; 1 in 2004

Source: U.S. Environmental Protection Agency