This set of results cover the period from January 2023 to December 2023, meaning that some responses were collected through face-to-face interviews.
Mae'r canlyniadau hyn yn cwmpasu'r cyfnod rhwng mis Ionawr 2023 a Rhagfyr 2023, felly casglwyd rhai o’r ymatebion drwy gyfweliadau wyneb-yn-wyneb.