Division 4.2.1 F1
If the accuracy requirements set out in point 4.2 are not met, the accuracy shall be recalculated for subsequent Type 1 tests performed in accordance with point 1.2 of Sub-Annex 6, in accordance with the formulae in point 4.2, using the fuel consumed determined and accumulated over all performed tests. The accuracy requirement shall be deemed to be fulfilled once the accuracy is higher than – 0,05 and lower than 0,05.