The Welsh Government has funded a boost in the sample size for Wales since 19 to 21 March 2020, and the sample size after boosting is in the region of 500 to 600.
Mae Llywodraeth Cymru wedi talu am gynnydd ym maint y sampl ar gyfer Cymru ers 19 i 21 Mawrth 2020, a maint y sampl yn sgîl hyn yw oddeutu 500 i 600.