As a consequence there was an increase in sessions missed due to study leave from 739 for the week May 17 to May 21 to 5,019 for the week of 28 June to 2 July.
O ganlyniad, bu cynnydd yn nifer y sesiynau a gollwyd oherwydd absenoldeb astudio o 739 ar gyfer yr wythnos Mai 17 i Fai 21 i 5,019 ar gyfer yr wythnos rhwng 28 Mehefin ac 2 Gorffennaf.