Powys had the lowest GVA per hour worked of the 174 NUTS3 areas in the UK in 2017 (65.2% of the UK figure) and Gwynedd had the fifth lowest (71.9%(r) of the UK figure).
Powys oedd yr ardal â’r GYC isaf fesul awr a weithiwyd o’r 174 ardal NUTS3 yn y DU yn 2017 (sef 65.2% o ffigur y DU), a Gwynedd oedd y bumed isaf (gyda 71.9% o ffigur y DU).