The median response time varies from month-to-month, but in the four years prior to the pandemic, had tended to range between 4 minutes 30 seconds and 6 minutes for red calls.
Mae canolrif yr amser ymateb yn amrywio o fis i fis, ond dros y pedair blynedd cyn y pandemig, roedd yn tueddu i amrywio rhwng 4 munud 30 eiliad a 6 munud yng nghyswllt galwadau coch.