“Roedd y perfformiad wedi gwella mewn 11 o’r 13 adran frys, gyda gwelliant cenedlaethol o dri phwynt canran yn erbyn y targed pedair awr, o’i gymharu â mis Mawrth y llynedd.
“There was improved performance in 11 of the 13 emergency departments, with a national improvement of three percentage points against the four-hour target of compared to March last year.