Therefore, the size of the territorial unit will also vary between Member States, depending on the regulatory needs in the specific national circumstances, and on the availability of local data.
Dá bhrí sin, beidh méid an aonaid chríochaigh éagsúil ó Bhallstát go Ballstát, ag brath ar na riachtanais rialála sna himthosca náisiúnta sonracha, agus ar infhaighteacht sonraí áitiúla.