Complex sentence: The authors found that as they swept the belt the v6 secular resonance removed low inclination asteroids and the v16 secular resonance excited asteroid inclinations producing a ratio of high to low inclination asteroids which was too large.
Split into simpler sentences: The authors found that as they swept the belt the v6 secular resonance removed low inclination asteroids and the v16 secular resonance excited asteroid inclinations. The result was a ratio of high to low inclination asteroids which was too large.