Regional cities’ score card for particles (PM10) NEPM 24-hour 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 34; good 45; fair 13; poor 6; very poor 2 (Note: Although the overall assessment is good, the distribution has a significant ‘tail’ of 29 days on which the national standard was exceeded)

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 30; good 61; fair 1; poor 0; very poor 2

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 55; good 34; fair 8; poor 2; very poor 1

Year(s): 
2011
5
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution: very good 65; good 30; fair 3; poor 2; very poor 1

Year(s): 
2011
5
Unclear
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Average percentage frequency distribution:
very good 39; good 49; fair 9; poor 2; very poor 1

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 46; good 52; fair 2; poor 0; 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: Regional cities’ score card for particles (PM10) NEPM 24-hour 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-37-regional-cities-score-card-particles-pm10-nepm-24-hour-standard-based-analysis, DOI 10.4226/94/58b65c70bc372