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- By CategoryMixed GasesGas Comp 4PPM METHANEGas Comp Amount177.6000000 99.9250000 90.9895000 79.9193000 99.9550000 13.5000000 81.9470000 9.0000000 81.9820000Gas Comp 1PPM NITROGEN DIOXIDE ARGON OXYGEN NITROGEN
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