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- By CategoryMixed GasesGas Comp Amount44.0000000Gas Comp Amount199.9739500 95.9700000 88.8240000 50.0000000 99.9932000 95.9982000 99.9986500 99.7885000 99.9320000 99.6000000Gas Comp 1HELIUM 3 PPM NITROGEN DIOXIDE PPM AMMONIA NITROGEN