Gwynedd, and Conwy and Denbighshire had the third and fifth lowest GVA per hour worked (69.9% and 71.7% of the UK figure respectively).
Gwynedd, a Chonwy a Sir Ddinbych oedd â'r trydydd a'r pumed GYC isaf yr awr a weithiwyd (69.9% a 71.7% o ffigur y DU yn y drefn honno).