In March, 67.5% of patients in all NHS emergency departments spent less than 4 hours in the department from arrival until admission, transfer or discharge.
Ym mis Mai, roedd 67.1% o gleifion yn holl adrannau achosion brys y GIG wedi treulio llai na 4 awr yn yr adran, o’r eiliad iddynt gyrraedd nes iddynt gael eu derbyn, eu trosglwyddo neu eu rhyddhau.