Supplementary methods were chosen by Projects in collaboration with their own appointed evaluators and/or internal advisers, and as a result varied widely.
Dewiswyd dulliau atodol gan Brosiectau mewn cydweithrediad â'u gwerthuswyr a/neu gynghorwyr mewnol eu hunain, ac o ganlyniad roedden nhw’n amrywio'n sylweddol.