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- By CategoryMixed GasesGas Comp Amount30.3500000Gas Comp Amount199.9860000 99.9985000 78.9400000 99.6670000 79.4875000 94.4917500 99.7300000 81.6400000 98.0000000 90.4000000 97.5000000 50.0000000 80.4890000 90.8110000 99.9925000 77.8950000 87.0925000Gas Comp 1NITROUS OXIDE PPM METHANE NITROGEN AIR PPM AMMONIA