This means that some of the data included in this statistical release may not have been subject to the same rigorous validation checks that would normally have occurred prior to the pandemic.
Mae hyn yn golygu efallai na fydd rhywfaint o’r data sydd wedi’u cynnwys yn y datganiad ystadegol hwn wedi cael yr un gwiriadau dilysu trylwyr ag a fyddai wedi digwydd fel arfer cyn y pandemig.