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Comparison of hot spot analysis between 2015 and 2018.
| Years | Hot Spot 99% Confidence | Hot Spot 95% Confidence | Hot Spot 90% Confidence | Cold Spot 90% Confidence | Cold Spot 95% Confidence |
|---|---|---|---|---|---|
| 2015 | Jiangsu, Anhui, Henan, Liaoning | Beijing, Tianjin, Hebei | Chongqing | ||
| 2018 | Anhui | Jiangxi, Hubei, Henan, Shaanxi, Shandong, Jiangsu, Shanghai, Zhejiang | Shaanxi, Beijing, Tianjin, Hebei | Tibet |
