World Tables - Page 2

Between 25,000 and 60,000 people.

Average is population weighted average of monitoring sites in medium-sized towns.

Source: Regional councils of Northland, Bay of Plenty, Hawke's Bay, Manawatu-Wanganui, Wellington, Canterbury, Southland;

Less than 25,000 people.

Average is population weighted average of monitoring sites in small towns.

Note: PM10 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Regional councils of Northland, Waikato, Manawatu-Wanganui, Wellington, West Coast, Canterbury, Otago, Southland;

Note: PM10 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Regional councils of Waikato, Wellington, Canterbury, Otago; Auckland Council

Rural areas as defined by Statistics New Zealand.

Average is unweighted average across North Island rural areas.

Note: There is no rural monitoring in the South Island. PM10 concentrations are given in micrograms per cubic metre of air,

Source: Regional councils of Bay of Plenty, Waikato; Auckland Council

Source: Regional councils of Northland, Bay of Plenty, Waikato, Hawke's Bay, Manawatu-Wanganui, Wellington, Canterbury, West Coast, Otago, Southland; District councils of Marlborough and Tasman; Nelson City Council; Auckland Council

Note: PM2.5 concentrations are given in micrograms per cubic metre of air, or µg/m3.

Source: Regional councils of Wellington, Canterbury; Auckland Council

Benzene is a volatile organic compound. Motor vehicle use and home heating are the main sources of airborne benzene emissions. Natural sources include volcanoes and forest fires. Benzene can affect the nervous system and is associated with some forms of cancer.

Benzene is emitted by human-made (motor vehicles, burning wood or coal for home heating, and some industrial activities) and natural (volcanoes and forest fires) sources.

Column headings:
- Con_mcg_m3 = Concentration in micrograms per cubic metre (μg/m3)

This dataset relates to the "Benzene concentrations" measure on the Environmental Indicators, Te taiao Aotearoa website.

Total suspended particulates (TSP) consist of all solid particles and liquid droplets up to 100 micrometres (μm) in diameter (ie when compared with PM10 and PM2.5, TSP is the equivalent of PM100).

TSP can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry) and petrol and diesel (from vehicles). Natural sources of TSP include sea salt, dust, pollen, smoke (from bush fires), and volcanic ash. TSP also forms from reactions between gases or between gases and other particles.

The smaller components of TSP (PM10 and PM2.5) are associated with health effects ranging from respiratory irritation to some forms of cancer. Reporting on changes in TSP concentrations helps us understand long-term changes in particulate matter pollution.

Column heading:
- No_exceed = number of exceedances

This dataset relates to the "Total suspended particulate concentration in Auckland" measure on the Environmental Indicators, Te taiao Aotearoa website.

Total suspended particulates (TSP) consist of all solid particles and liquid droplets up to 100 micrometres (μm) in diameter (ie when compared with PM10 and PM2.5, TSP is the equivalent of PM100).

TSP can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry) and petrol and diesel (from vehicles). Natural sources of TSP include sea salt, dust, pollen, smoke (from bush fires), and volcanic ash. TSP also forms from reactions between gases or between gases and other particles.

The smaller components of TSP (PM10 and PM2.5) are associated with health effects ranging from respiratory irritation to some forms of cancer. Reporting on changes in TSP concentrations helps us understand long-term changes in particulate matter pollution.

Column headings:
- Con_mcg_m3 = Concentration in micrograms per cubic metre (μg/m3)

This dataset relates to the "Total suspended particulate concentration in Auckland" measure on the Environmental Indicators, Te taiao Aotearoa website.

Road motor vehicles emit a range of air pollutants from their exhausts, and from brake and tyre wear. They are the main human-made source of nitrogen oxides and carbon monoxide emissions. Exposure to these pollutants can damage health, with effects ranging from respiratory irritation to cancer.

Road motor vehicles range from passenger vehicles to heavy commercial vehicles, including petrol and diesel vehicles. Vehicles for use in farm and construction are not included. While road motor vehicle travel predominantly involves petrol vehicles (approximately 73 percent of vehicle kilometres travelled), diesel vehicles (approximately 27 percent of vehicle kilometres travelled) contribute the majority of air pollutants from road motor vehicles – specifically particulate matter and nitrogen oxides (NIWA, 2015; Parliamentary Commissioner for the Environment, 2015).

This dataset relates to the "Road motor vehicle emissions" measure on the Environmental Indicators, Te taiao Aotearoa website.