Dataset variable
| Variable | Description | Attribute type |
| ΠΆ | Temperature | Attribute |
| A1 | Mean of nitrogen dioxide, NO2 | |
| A2 | Percentage exceeding of NO2 tolerance | |
| A5 | Mean of carbon monoxide, CO | |
| A6 | Percentage exceeding of CO tolerance | |
| A9 | Mean of fine particles, PM10 | |
| A10 | Percentage exceeding of PM10 tolerance | |
| A13 | Mean of fine particles PM2.5 | |
| A14 | Percentage exceeding of PM2.5 tolerance | |
| A17 | Mean of sulfur dioxide SO2 | |
| A18 | Percentage exceeding of SO2 tolerance | |
| Y | High, low of mortality | Class attribute |