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 3,773 for the week of 12 July to 16 July (table 6).
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 3,773 ar gyfer yr wythnos rhwng 12 Gorffennaf ac 16 Gorffennaf (tabl 6).