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.
How does carbon monoxide from vehicles affect the air we breath? Before catalytic converters, a 1973 medical study found that a 90-minute ride on a Los Angeles freeway produced EKG irregularities in 40% of patients with preexisting cardiovascular disease. Expressway CO levels approached 25-100 ppm.