Since production numbers are averaged with the APH (actual production history) database, a catastrophic year can bring down the overall averages. When an insured elects the YC option on an application or Policy Change form by the applicable deadline, a yield cup helps reduce the effect of a catastrophic year on an approved actual production history (APH) yield by preventing a yield from decreasing the average yield by more than 10 percent compared to the prior year’s approved APH yield.