In May there were 5,199 red (life threatening) calls to the ambulance service, 15.3% of all calls, 0.2 percentage points lower than in April.
Ym mis Mai, cafodd y gwasanaeth ambiwlans 5,199 o alwadau coch (bywyd yn y fantol), sef 15.3% o’r holl alwadau, 0.2 pwynt canran yn is nag ym mis Ebrill.