there were 407 thousand tonnes of authorised disposals, of which 127 thousand tonnes were taxed at the standard rate; 154 thousand tonnes at the lower rate; with the remainder relieved or discounted
bu 407 mil o dunelli o warediadau awdurdodedig, ac o'r rhain trethwyd 127 mil o dunelli ar y gyfradd safonol; 154 mil o dunelli ar y gyfradd is; a’r gweddill wedi derbyn rhyddhad neu ddisgownt