Measuring and tracking: services often do not record measures of service performance – such as how many people have made it through a service or the time it took them to complete it.
Mesur ac olrhain: yn aml, nid yw gwasanaethau’n cofnodi mesurau perfformiad gwasanaeth – fel faint o bobl sydd wedi mynd trwy wasanaeth o’r dechrau i’r diwedd neu’r amser a gymerwyd i’w gwblhau.