In addition, IFF undertook call chasing throughout the fieldwork period, since many businesses were working from home during the pandemic.
Ar ben hynny, aeth IFF ati i wneud galwadau ffôn i atgoffa drwy gydol y cyfnod gwaith maes, gan fod llawer o fusnesau’n gweithio gartref yn ystod y pandemig.