A summary quality report is available, containing detailed information on the quality of the survey as well as a summary of the methods used to compile the results.
Mae adroddiad ansawdd cryno ar gael, sy'n cynnwys gwybodaeth fanylach am ansawdd yr arolwg yn ogystal â chrynodeb o'r dulliau a ddefnyddir i lunio'r canlyniadau.