Working level (WL) means any combination of short-lived radon daughters in 1 liter of air that will result in the ultimate emission of 1.3E+5 MeV of potential alpha particle energy. The short-lived radon daughters are—for radon-222: polonium-218, lead-214, bismuth-214, and polonium-214; and for radon-220: polonium-216, lead-212, bismuth-212, and polonium-212.
Barrier Level means the Barrier Level as specified in § 1 of the Product and Underlying Data.
Working level month (WLM) means an exposure to 1 working level for 170 hours (2,000 working hours per year divided by 12 months per year is approximately equal to 170 hours per month).
Severity Level means the actual impact of a Defect on a user’s operational environment as further described in the table below.
Margin Level means the percentage Equity to Necessary Margin ratio. It is calculated as (Equity / Necessary Margin) * 100%.
Base Level means the following amounts plus the percentage
Reference Level means the level of the Index (excluding any flash estimates) published or announced by Eurostat (or any successor entity which publishes such index) in respect of the month that is 12 calendar months prior to the month referred to in “Latest Level” above.
Federal poverty level means the poverty level as defined by the most recently revised poverty income guidelines published by the United States Department of Health and Human Services in the Federal Register.