Please note that one hospital in Wales was unable to supply data on the number of patients admitted on some dates in July and August 2021 due to a data processing issue.
Noder nad oedd un ysbyty yng Nghymru yn gallu darparu data ar nifer y cleifion a dderbyniwyd ar rai dyddiau ym mis Gorffennaf a mis Awst 2021 oherwydd mater prosesu data.