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- By CategoryMixed GasesGas Comp Amount50.2500000Gas Comp Amount199.9787500 99.9967000 77.8950000 375.0000000 99.9670000 9.0000000 82.4920000 81.8785000 50.0000000 82.4100000 99.9922000 64.6000000 99.9400000 99.9987500Gas Comp 1PPM CARBON MONOXIDE METHANE NITROGEN