| LST Range | 1986 | 2002 | 2016 |
| Coverage (%) | |||
| 18 to ≤20 | 8.59 | 0 | 0 |
| 20 to ≤24 | 45.12 | 12.86 | 3.76 |
| 24 to ≤27 | 42.56 | 9.21 | 25.77 |
| 27 to ≤31 | 3.73 | 50.23 | 68.93 |
| 31 to ≤34 | 0 | 26.37 | 1.53 |
| 34 to ≤37 | 0 | 1.33 | 0 |