The average (median) time spent in emergency departments also lengthened slightly in June, and was the joint-third longest on record, at three hours and two minutes.
Fe wnaeth yr amser cyfartalog (canolrifol) a dreuliwyd mewn adrannau brys gynyddu rhywfaint ym mis Mehefin hefyd, a dyma oedd y cydradd-drydydd hiraf ar gofnod, sef tair awr a dau funud.