Table 2.
Regional clusters created for data analysis and the number of stations providing data for each air quality parameter. Site type information for each site can be found in Table S2 (Appendix).
| Group Name | Regional Cluster | Number of Stations |
||
|---|---|---|---|---|
| PM10 | PM2.5 | NO2 | ||
| North Island | ||||
| North Upper (NU) | Northland, Auckland, Waikato | 6 | 3 | 3 |
| North Central (NC) | Hawkes Bay, Gisborne, Taranaki, Bay of Plenty | 5 | 3 | 0 |
| North Lower (NL) |
Horizons, Wellington |
5 |
3 |
3 |
| South Island | ||||
| South Upper (SU) | Nelson, Tasman, Marlborough, West Coast | 5 | 1 | 0 |
| South Lower (SL) | Canterbury, Otago, Southland | 6 | 3 | 2 |