In July 2021, the proportion of all calls that were immediately life-threatening (red calls) was 8.2%, up from 7.9% in June 2021.
Ym mis Gorffennaf 2021, roedd cyfran yr holl alwadau lle mae bywyd yn y fantol (galwadau coch) yn 8.2%, i fyny o 7.9% ym mis Mehefin 2021.