Metropolitan cities’ score card for ozone (four-hour) NEPM standard, based on analysis of air quality index values, 1999–2008

Component
Summary
Grade
Very poor Poor Fair Good Very good
Confidence
In Grade In Trend
Comparability
To previous years

Average percentage frequency distribution: very good 46; good 53; fair 1; poor 0; very poor 0

Year(s): 
2011
4
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 31; good 64; fair 55; poor 0; very poor 0

Year(s): 
2011
4
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 43; good 55; fair 2; poor 0; very poor 0

Year(s): 
2011
4
Deteriorating
Confidence (in grade): 
Adequate
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 34; good 63; fair 3; poor 0; very poor 0

Year(s): 
2011
4
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 16; good 79; fair 4; poor 0; very poor 0

Year(s): 
2011
4
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 17; good 72; fair 9; poor 2; very poor 0

Year(s): 
2011
4
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed
(2011). Ambient air quality: Metropolitan cities’ score card for ozone (four-hour) NEPM standard, based on analysis of air quality index values, 1999–2008. In: Australia state of the environment 2011, Australian Government Department of the Environment and Energy, Canberra, https://soe.environment.gov.au/assessment-summary/ambient-air-quality/metropolitan-cities-score-card-ozone-four-hour-nepm-standard, DOI 10.4226/94/58b65c70bc372