It replaced the planned face-to-face 2020‑21 National Survey as a response to the coronavirus situation and reached around 1,000 people a month.
Cymerodd le’r Arolwg Cenedlaethol wyneb yn wyneb y cynlluniwyd ei gynnal, mewn ymateb i’r sefyllfa o ran y Coronafeirws a chyrhaeddodd tua 1000 o bobl y mis.