Loaʻa i ka carbon monoxide ka laulā pahū o 12.5% i 74.2%, e pili ana i kona hakina leo ma kahi hakahaka.
Ma ia mau kaiapuni, i ka wā e pā ai ka hui kalapona a me ka ea i kēia ratio kikoʻī, e ʻā ia me ka pahū ke ʻike ʻia i kahi lapalapa hāmama. Malalo 12.5%, ua emi loa ka wahie, a ʻo ka nui o ka ea e alakaʻi i ka ʻai wikiwiki ʻana ma o ka puhi ʻana.