New Zealand’s average national PM10 concentration
2006–2012, micrograms per cubic metre of air
Year | Micrograms per cubic metre of air (µg/m3) |
---|---|
2006 | 17.0 |
2007 | 17.0 |
2008 | 16.9 |
2009 | 16.4 |
2010 | 15.7 |
2011 | 16.0 |
2012 | 15.6 |