In 2023-24, 70% of deliberate fires were in South Wales, over a fifth in Mid and West Wales, and almost a tenth were in North Wales.
Yn 2023-24, roedd 70% o’r tanau bwriadol yn Ne Cymru, dros un rhan o bump yng Nghanolbarth a Gorllewin Cymru, a bron i ddegfed yng Ngogledd Cymru.