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- By CategoryMixed GasesGas Comp 5METHANEGas Comp Amount199.9899000 99.9860000 99.9862500 81.8785000 99.9991000 78.9920000 80.4375000 77.0000000 99.9460000 99.6894000 99.9880000 80.4875000 99.9830000 83.5400000 99.9987500Gas Comp 1PPM CARBON DIOXIDE NITROGEN DIOXIDE NITROGEN NITROGEN