RNOx_Cold = NOxmass_cold_phase_1 (i g) og RNOx_Warm = NOxmass_warm_phase_2 (i g), jf. formlen i punkt 8.4
RNOx_Cold = NOxmass_cold_phase_1 (in g) and RNOx_Warm = NOxmass_warm_phase_2 (in g), see formula in point 8.4