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- By CategoryMixed GasesGas Comp Amount41.4500000Gas Comp Amount199.9730000 53.7860000 83.5400000 99.9939000 87.0900000 98.9900000 83.5420000 99.8860000 77.5000000 99.9835000 81.6375000 99.9595000 88.5000000Gas Comp 1NITROGEN DIOXIDE PPM CARBON DIOXIDE NITROGEN NITROGEN