(i)for vehicles fuelled by gaseous hydrogen:FC0,024Vd1Z2p2T21Z1p1T1Under previous agreement with the type-approval authority, and for vehicles fuelled either by gaseous or liquid hydrogen, the manufacturer may choose as alternative to the method above, either the formulaFC0,10,1119 H2O H2or a method according to standard protocols such as SAE J2572.In these formulae:FCthe fuel consumption in litre per 100 km (in the case of petrol, ethanol, LPG, diesel or biodiesel) in m3 per 100 km (in the case of natural gas and H2NG) or in kg per 100 km in the case of hydrogen.HCthe measured emission of hydrocarbons in g/kmCOthe measured emission of carbon monoxide in g/kmCO2the measured emission of carbon dioxide in g/kmH2Othe measured emission of H2O in g/kmH2the measured emission of H2 in g/kmAquantity of NG/biomethane within the H2NG mixture, expressed in per cent volumeDthe density of the test fuel.In the case of gaseous fuels D is the density at 15 °C.dthe theoretical distance covered by a vehicle tested under the type 1 test in km.p1pressure in gaseous fuel tank before the operating cycle in Pa;p2pressure in gaseous fuel tank after the operating cycle in Pa;T1temperature in gaseous fuel tank before the operating cycle in K.T2temperature in gaseous fuel tank after the operating cycle in K.Z1compressibility factor of the gaseous fuel at p1 and T1Z2compressibility factor of the gaseous fuel at p2 and T2Vinner volume of the gaseous fuel tank in m 3The compressibility factor shall be obtained from the following table:T(k)p(bar)\ | 33 | 53 | 73 | 93 | 113 | 133 | 153 | 173 | 193 | 213 | 233 | 248 | 263 | 278 | 293 | 308 | 323 | 338 | 3535 | 0,8589 | 0,9651 | 0,9888 | 0,9970 | 1,0004 | 1,0019 | 1,0026 | 1,0029 | 1,0030 | 1,0028 | 1,0035 | 1,0034 | 1,0033 | 1,0032 | 1,0031 | 1,0030 | 1,0029 | 1,0028 | 1,0027100 | 1,0508 | 0,9221 | 0,9911 | 1,0422 | 1,0659 | 1,0757 | 1,0788 | 1,0785 | 1,0765 | 1,0705 | 1,0712 | 1,0687 | 1,0663 | 1,0640 | 1,0617 | 1,0595 | 1,0574 | 1,0554 | 1,0535200 | 1,8854 | 1,4158 | 1,2779 | 1,2334 | 1,2131 | 1,1990 | 1,1868 | 1,1757 | 1,1653 | 1,1468 | 1,1475 | 1,1413 | 1,1355 | 1,1300 | 1,1249 | 1,1201 | 1,1156 | 1,1113 | 1,1073300 | 2,6477 | 1,8906 | 1,6038 | 1,4696 | 1,3951 | 1,3471 | 1,3123 | 1,2851 | 1,2628 | 1,2276 | 1,2282 | 1,2173 | 1,2073 | 1,1982 | 1,1897 | 1,1819 | 1,1747 | 1,1680 | 1,1617400 | 3,3652 | 2,3384 | 1,9225 | 1,7107 | 1,5860 | 1,5039 | 1,4453 | 1,4006 | 1,3651 | 1,3111 | 1,3118 | 1,2956 | 1,2811 | 1,2679 | 1,2558 | 1,2448 | 1,2347 | 1,2253 | 1,2166500 | 4,0509 | 2,7646 | 2,2292 | 1,9472 | 1,7764 | 1,6623 | 1,5804 | 1,5183 | 1,4693 | 1,3962 | 1,3968 | 1,3752 | 1,3559 | 1,3385 | 1,3227 | 1,3083 | 1,2952 | 1,2830 | 1,2718600 | 4,7119 | 3,1739 | 2,5247 | 2,1771 | 1,9633 | 1,8190 | 1,7150 | 1,6361 | 1,5739 | 1,4817 | 1,4823 | 1,4552 | 1,4311 | 1,4094 | 1,3899 | 1,3721 | 1,3559 | 1,3410 | 1,3272700 | 5,3519 | 3,5697 | 2,8104 | 2,4003 | 2,1458 | 1,9730 | 1,8479 | 1,7528 | 1,6779 | 1,5669 | 1,5675 | 1,5350 | 1,5062 | 1,4803 | 1,4570 | 1,4358 | 1,4165 | 1,3988 | 1,3826800 | 5,9730 | 3,9541 | 3,0877 | 2,6172 | 2,3239 | 2,1238 | 1,9785 | 1,8679 | 1,7807 | 1,6515 | 1,6521 | 1,6143 | 1,5808 | 1,5508 | 1,5237 | 1,4992 | 1,4769 | 1,4565 | 1,4377900 | 6,5759 | 4,3287 | 3,3577 | 2,8286 | 2,4978 | 2,2714 | 2,1067 | 1,9811 | 1,8820 | 1,7352 | 1,7358 | 1,6929 | 1,6548 | 1,6207 | 1,5900 | 1,5623 | 1,5370 | 1,5138 | 1,4926In the case that the needed input values for p and T are not indicated in the table, the compressibility factor shall be obtained by linear interpolation between the compressibility factors indicated in the table, choosing the ones that are the closest to the sought value.’