Performance worsened against the 62 day target in January, decreasing to 57.4%, compared to 61.9% the previous month.
Roedd y perfformiad wedi gwaethygu o’i gymharu â’r targed 62 diwrnod ym mis Ionawr, gan ostwng i 57.4%, o’i gymharu â 61.9% yn y mis blaenorol.