| Source of variation | Between groups | Within groups | Total |
| SS | 14,772.5 | 12,982.9 | 27,755.3 |
| Df | 2 | 75 | 77 |
| MS | 7386.23 | 173.1 | |
| F | 42.6 | ||
| P-value | 4.23 × 10−13 | ||
| Fcrit | 3.12 |