The daily average number of calls made to the ambulance service in May 2021 increased compared to the previous month and was the highest since the pandemic began.
Roedd nifer cyfartalog dyddiol y galwadau a wnaed i’r gwasanaeth ambiwlans ym mis Mai 2021 wedi cynyddu o’i gymharu â’r mis blaenorol, ac roedd ar ei uchaf ers dechrau’r pandemig.