By looking at the cases from 2018-19 that have been refunded since, we have been able to model the effect of bridging that is yet to occur within the data we published for 2020-21.
Drwy edrych ar yr achosion o 2018-19 sydd wedi'u had-dalu ers hynny, rydym wedi gallu modelu effaith pontio nad yw wedi digwydd eto o fewn y data a gyhoeddwyd gennym ar gyfer 2020-21.