In the latest month, 4,360 patients spent 12 hours or more in an emergency care department, from arrival until admission, transfer or discharge.
Yn y mis diweddaraf, treuliodd 4,360 o gleifion 12 awr neu ragor mewn adran gofal brys, o’r eiliad iddynt gyrraedd nes iddynt gael eu derbyn, eu trosglwyddo neu eu rhyddhau.