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- By CategoryMixed GasesGas Comp Amount299.9950000Gas Comp Amount199.9948400 99.9739500 50.0000000 99.9997000 86.4300000 99.9000000 53.7860000 83.8950000 99.9700000 86.1130000 99.9994300Gas Comp 1HELIUM 3 PPM AMMONIA NITROGEN PPM NITROGEN DIOXIDE