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Grey correlation degree between GDP and industrial 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 | PM | ||
| Degree of association (R0i) | 1 | 0.9414 | 0.9061 | 0.9165 | 0.8976 | 0.6518 | 0.5805 | 0.6013 |
