PO. Pooled Oil
(08.25.04, unknown) Fresh oil or mousse more than 1 centimeter thick
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CV. Cover
(08.25.04, unknown) Oil or mousse more than 0.1 and less than 1 centimeter thick
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CT. Coat
(08.25.04, unknown) Visible coating of oil less than 0.1 centimeter thick; can be scraped off with fingernail
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ST. Stain
(08.25.04, unknown) Visible oil that cannot be scraped off with fingernail
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FL. Film
(08.25.04, unknown) Transparent or iridescent sheen or oily film
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