More than half (53.5%) of treatments were in the Band 1 category and activity for treatments in Bands 1, 2 and 3 increased from the previous year.
Roedd mwy na hanner (53.5%) y triniaethau yng nghategori Band 1 a bu cynnydd mewn gweithgarwch ar gyfer triniaethau ym Mand 1, 2 a 3 o'i gymharu â'r flwyddyn flaenorol.