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- By CategoryMixed GasesGas Comp Amount2260.5000000Gas Comp Amount184.0325000 99.7900000 99.9910000 99.9000000 99.9739500 99.9860000 99.9948400 79.2000000 50.0000000 77.5000000 99.9987500Gas Comp 1PPM NITROGEN DIOXIDE HELIUM 3 PPM AMMONIA NITROGEN