Where the conventional duty exceeds the duty applied as defined above by more than 10%, the latter duty plus 10% shall be taken as the basis for calculating the arithmetical average.
Má bhionn an dleacht choinbhinsiúnta thar 10% nios airde ná an dleacht a fheidhmítear mar a shainitear thuas, is i an dleacht deiridh sin móide 10% a ghlacfar mar bhonn chun an meán uimhríochtúil a ríomh.