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- By CategoryMixed GasesGas Comp Amount30.3500000Gas Comp Amount181.6400000 99.9985000 79.4875000 77.8950000 99.9909000 87.0925000 90.8110000 98.0000000 90.4000000 80.4890000 99.9860000 50.0000000 99.9725000 78.9400000Gas Comp 1NITROGEN NITROUS OXIDE AIR PPM AMMONIA PPM METHANE