| mean | std.deviation | Min. | Max. | |
| GVC position | −0.04 | 0.90 | −3.07 | 3.48 |
| Total forward GVC participation | 0.20 | 0.20 | 0 | 1 |
| Total backward GVC participation | 0.25 | 0.18 | 0 | 1 |