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- By CategoryMixed GasesGas Comp Amount40.3500000Gas Comp Amount178.9920000 99.9922000 50.0000000 99.9787500 99.9400000 99.9987500 64.6000000 81.6400000 375.0000000 9.0000000 99.9967000 81.8785000 82.4920000 77.8950000Gas Comp 1PPM CARBON MONOXIDE METHANE NITROGEN