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Nominal numbers are always discrete.An example would be personality types. You can't have a half or a fourth of a defined personality.
The Capability Maturity Model Integration program has 5 maturity levels. These include Level 1 (Initial), Level 2 (Managed), Level 3 (Defined), Level 4 (Quantitatively Managed), and Level 5 (Optimizing).
Normal levels after 24 hours for a RAIU (Thyroid) are 8% -25%. Increased levels can be indicative of such conditions such as Hyperthyroidism, Hashimoto's Thyroiditis (early), and Goiter. There may be other conditions as well...but these are most common.
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Red indicates reduced strength 59% or less fit for duty.
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The color red is used to indicate the level on a SITREP report that defines an area that has been reduced in strength. Green and amber indicate levels that are performing at or above expected strength.
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PQ4R four R's stands for
Reduced voltage levels of AC power that lasts for a period of time is known as a brownout.