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- By CategoryMixed GasesGas Comp 4PPM CARBON MONOXIDEGas Comp Amount195.4964000 99.9799000 89.1850000 90.8110000 99.9965900 81.0420000 88.8240000 99.9875000 99.9932000 83.5400000 69.0000000 99.9992000 87.0000000Gas Comp 1NITROGEN DIOXIDE NITROGEN NITROGEN PPM CARBON DIOXIDE