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Dewis pwnc arall neu clirio pob hidlydd.
Nid yw holl gynnwys y cyfrifia wedi'i ryddhau. Edrychwch am ddatganiadau sydd i ddod ar y calendr datganiadau. Fel arall, gallwch greu set ddata eich fun.
Rhyddhawyd ar: 24 June 2021 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 21 April 2021 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 22 January 2019 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 11 March 2020 | Gwybodaeth gorfforaethol
Published 11 March 2020
Rhyddhawyd ar: 23 September 2021 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 09 December 2021 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 04 February 2021 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 15 March 2022 | Gwybodaeth gorfforaethol
Rhyddhawyd ar: 08 September 2021 | Methodoleg
Latest quality and methodology information on data from the COVID Test and Trace Contacts Insights Survey and its use to examine understanding and adherence to self-isolation guidance. Experimental statistics.
Rhyddhawyd ar: 17 December 2021 | Gwybodaeth gorfforaethol
