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- By CategoryMixed GasesGas Comp Amount30.3500000Gas Comp Amount190.4000000 80.4890000 78.9400000 99.9725000 50.0000000 90.8110000 99.9860000 87.0925000 77.8950000 98.0000000 79.4875000 99.9200000 99.9985000 81.6400000 86.5000000Gas Comp 1PPM AMMONIA PPM METHANE NITROUS OXIDE AIR NITROGEN