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- By CategoryMixed GasesGas Comp Amount2260.5000000Gas Comp Amount199.9825000 50.0000000 99.9000000 65.0000000 99.5000000 99.9991000 99.9984000 99.8920000 99.9739500 99.9948400Gas Comp 1NITROGEN HELIUM 3 PPM NITROGEN DIOXIDE PPM AMMONIA