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.
Test gas for Brasch carbon monoxide detectors should have a concentration of between 50 and 100 PPM. Test gas for nitrogen dioxide is not available in the 1 to 4 PPM concentration required to test detectors with nitrogen dioxide sensors.