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- By CategoryMixed GasesGas Comp Amount2260.5000000Gas Comp Amount183.5400000 99.9670000 50.0000000 82.4940000 95.9982000 99.9739500 99.9922000 79.1400000 99.9991805 99.7200000Gas Comp 1HELIUM 3 PPM NITROGEN DIOXIDE NITROGEN PPM AMMONIA