| Variable | Obs | Mean | Std. Dev. | Min | Max |
| Score | 9303 | 72.862 | 5.695 | 47.600 | 90.930 |
| Treated × Time | 9303 | 0.247 | 0.431 | 0.000 | 1.000 |
| Treated | 9303 | 0.432 | 0.495 | 0.000 | 1.000 |
| Time | 9303 | 0.572 | 0.495 | 0.000 | 1.000 |
| Age | 9303 | 2.925 | 0.293 | 1.790 | 3.990 |
| Soe | 9303 | 0.351 | 0.477 | 0.000 | 1.000 |
| Sep | 9303 | 4.891 | 7.655 | −7.640 | 49.400 |
| Concen | 9303 | 32.641 | 14.025 | 2.430 | 89.990 |
| Size | 9303 | 1.73e | 7.92e | 1.90e | 2.70e |
| Rdi | 9303 | 4.500 | 4.190 | 0.000 | 88.560 |
| TBQ | 9303 | 2.149 | 1.467 | 0.701 | 25.506 |
| Gxh | 9303 | 2992765.400 | 3290522.100 | 11904.760 | 79923500.000 |