The maximum length of time you can claim unemployment benefits is 26 weeks. If the unemployment rate is 5% or lower, you can claim benefits for up to 12 weeks. For every .5% increase in the unemployment rate above 5%, a week is added to the duration of benefits.
1 Non-smokers living away from urban areas have normal carbon monoxide levels in the blood stream of 0.4% to 1.0%.  Carbon monoxide levels of 1% to 5% may be considered normal if a person lives in a busy urban or industrial setting.
Carbon monoxide is excreted through the lungs. The half-life in a normal atmosphere is 3 to 4 hours. 100% oxygen reduces this to 30-90 minutes and 100% oxygen at hyperbaric pressure of 2.5 atmospheres reduces it to 15-23 minutes. The value of hyperbaric oxygen is, however, unclear.