In April there were 5,172 red (life threatening) calls to the ambulance service, 15.5% of all calls, 0.6 percentage points lower than in March.
Ym mis Ebrill, cafodd y gwasanaeth ambiwlans 5,172 o alwadau coch (bywyd yn y fantol), sef 15.5% o’r holl alwadau, 0.6 pwynt canran yn is nag ym mis Mawrth.