These practices did supply initial data through an Excel spreadsheet in late 2019, which was used to pre-populate the WNWRS before the system went live for practices.
Darparodd y practisau hyn ddata cychwynnol drwy daenlen Excel ddiwedd 2019, a ddefnyddiwyd i rag-boblogi WNWRS cyn i'r system fynd yn fyw ar gyfer practisau.