The average time spent in emergency departments in January was 15 minutes shorter than the previous month at 2 hours and 41 minutes.
Roedd yr amser cyfartalog a gafodd ei dreulio mewn adrannau brys ym mis Ionawr 15 munud yn fyrrach na’r mis blaenorol – cyfanswm o 2 awr a 41 munud.