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- By CategoryMixed GasesGas Comp Amount30.3500000Gas Comp Amount179.4875000 90.8110000 90.4000000 77.8950000 99.9860000 98.0000000 99.9775000 78.9400000 81.6400000 99.9985000 50.0000000 87.0925000 80.4890000 95.4964000Gas Comp 1PPM AMMONIA PPM METHANE NITROGEN AIR NITROUS OXIDE