[['fuel gas', 'upper index kcal / nm 3', 'lower index kcal / nm 3', 'upper index mj / nm 3', 'lower index mj / nm 3'], ['hydrogen', '11528', '9715', '48.23', '40.65'], ['methane', '12735', '11452', '53.28', '47.91'], ['ethane', '16298', '14931', '68.19', '62.47'], ['ethylene', '15253', '14344', '63.82', '60.01'], ['natural gas', '12837', '11597', '53.71', '48.52'], ['propane', '19376', '17817', '81.07', '74.54'], ['propylene', '18413', '17180', '77.04', '71.88'], ['n - butane', '22066', '20336', '92.32', '85.08'], ['iso - butane', '21980', '20247', '91.96', '84.71'], ['butylene - 1', '21142', '19728', '88.46', '82.54'], ['lpg', '20755', '19106', '86.84', '79.94'], ['acetylene', '14655', '14141', '61.32', '59.16']]
Ethane has a higher Upper Index Kcal / Nm 3 than Ethylene
[ENT] has a higher [ENT] than [ENT]