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- By CategoryMixed GasesGas Comp Amount41.4500000Gas Comp Amount181.0420000 88.9900000 81.6580000 53.7860000 99.9700000 99.9948400 50.0000000 99.9739500 99.9020000 77.6000000Gas Comp 1PPM NITROGEN DIOXIDE NITROGEN HELIUM 3 PPM AMMONIA