translate English to French: Where “C” is used in an inventory, reference should be made to the Protocol provision that authorizes such practice; and “0” for emissions by sources of compounds that are estimated to be less than one half of the unit being used to record the inventory table, and which therefore appear as zero after rounding.
f) «O» indique les émissions de composés qui, d'après les estimations, sont inférieures à la moitié de l'unité utilisée pour le tableau de l'inventaire et qui donc, une fois arrondies, seraient nulles.