(a) A normalised version of comparative advantage was used to aid interpretation, a positive value indicated a comparative advantage, growing stronger as it approaches 1.
(a) Defnyddiwyd fersiwn wedi’i normaleiddio o fantais gymharol i helpu i ddehongli, roedd gwerth cadarnhaol yn dangos mantais gymharol, gan dyfu’n gryfach wrth ddynesu at 1.