Only four changes have been recorded in the National Dataset following the inspections of category C and D tips that took place over the winter and since the last data update.
Dim ond pedwar newid sydd wedi'u cofnodi yn y Set Ddata Genedlaethol yn dilyn yr archwiliadau o domenni categori C a D a gynhaliwyd dros y gaeaf ac ers y diweddariad diwethaf o ddata.