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Statistics of the datasets used in this paper.
| Description | Beijing | Tianjin | London |
|---|---|---|---|
| # Of air quality stations | 35 | 26 | 13 |
| # Of air quality timespan | 01/2016–01/2018 | 01/2014–04/2015 | 01/2017–03/2018 |
| # Of air quality features | 5 | 6 | 3 |
| # Of air quality records | 1,079,040 | 214,760 | 141,661 |
| # Of POI categories | 12 | 20 | 8 |
| # Of meteorology features | 4 | 5 | 5 |
| # Of time features | 3 | 3 | 3 |
