IFF Research are currently contracted for one further year of the survey and the project board are considering options for delivering this in 2023 and 2024.
Ar hyn o bryd, mae IFF Research dan gontract i gyflawni blwyddyn arall o'r arolwg ac mae bwrdd y prosiect yn ystyried opsiynau i'w gyflawni yn 2023 a 2024.