This is to inform users of the data and its reported statistics are still in a developmental phase and may have issues pertaining to data quality.
Maent yn cael eu defnyddio i roi gwybod i ddefnyddwyr am y data a’r ffaith fod yr ystadegau yr adroddir arnynt yn dal i gael eu datblygu ac y gallai fod problemau o ran ansawdd y data.