For missed or late tests, the next test must be determined from the point at which the late or missed test should have been carried out (not the load that was actually tested).
Ar gyfer profion a fethwyd neu sy’n hwyr, rhaid penderfynu ar y prawf nesaf o'r pwynt lle dylai'r prawf hwyr neu’r prawf a fethwyd fod wedi'i gynnal (nid o’r llwyth a gafodd ei brofi mewn gwirionedd).