Data for most of the categories are not available from 16 August to 17 September 2020 due to the data being unavailable for many parts of Wales (below quality thresholds).
Nid yw’r data ar gyfer y rhan fwyaf o gategorïau ar gael rhwng Awst 16 i Medi 17 2020 gan nad oedd y data ar gael ar gyfer nifer o rannau o Gymru (o dan y trothwy safon).