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- By CategoryMixed GasesGas Comp Amount30.3500000Gas Comp Amount194.4917500 78.9400000 98.0000000 79.4875000 77.8950000 99.6670000 99.9320000 90.4000000 90.8110000 81.6400000 87.0925000 99.9925000 99.9985000 99.9787500 50.0000000 80.4890000 99.9860000 97.5000000Gas Comp 1PPM METHANE AIR NITROUS OXIDE PPM AMMONIA NITROGEN