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Gray correlation degree between GDP and domestic pollutant emissions in Urumqi.
| GDP (billion yuan) | Wastewater pollutant emissions | Emissions of waste gas pollutants | ||||||
|---|---|---|---|---|---|---|---|---|
| Chemistry oxygen demand | Ammonia nitrogen | Total nitrogen | Total phosphorus | SO2 | Nitrogen oxide chemicals | Particulate matter | ||
| Degree of association(R0i) | 1 | 0.6466 | 0.8806 | 0.7598 | 0.7980 | 0.8875 | 0.9094 | 0.7220 |
