The largest grade disparity was at the A* and A grade: girls were awarded 4.6 and 4.8 percentage points, respectively, more than boys.
Roedd y gwahaniaeth mwyaf rhwng graddau ar raddfa A* ac A: dyfarnwyd 4.6 a 4.8 pwynt canran yn fwy i ferched na bechgyn, yn y drefn honno.