The most common reason for sessions missed during the week of 29 November to 3 December 2021 was illness (code “I”), with 6.9% of sessions missed for this reason.
Y rheswm mwyaf cyffredin dros sesiynau a gollwyd yn ystod yr wythnos rhwng 29 Tachwedd i 3 Rhagfyr 2021 oedd salwch (cod “I”), gyda 6.9% o sesiynau wedi’u colli oherwydd y rheswm hwn.