Description COMPONENTS CONCENTRATION NITROGEN 0.20% CARBON DIOXIDE 10.10% METHANE BALANCE ETHANE 4.20% PROPANE 1.90% ISO-BUTANE 0.90% N-BUTANE 0.30% NEOPENTANE - - ISO-PENTANE 0.20% N-PENTANE 0.10% HEXANE 0.40% HEPTANE - -