Between 2020/21 and 2021/22, the gap increased for the A*-C and A*G grade ranges but decreased for A*-A.
Rhwng 2020/21 a 2021/22, cynyddodd y bwlch ar gyfer yr ystodau graddau A*-C ac A*-G ond gostyngodd ar gyfer A*-A.