Sections/questions that use raising method (with many observations) Sections/questions that use most recent observations(with few observations)
Adrannau/cwestiynau sy’n defnyddio dull codi (gyda llawer o arsylwadau) Adrannau/cwestiynau sy’n defnyddio arsylwadau diweddaraf (heb lawer o arsylwadau)