. "2019-03-04 17:29:46.0" . "SDN:P07::CF12N63" . . . "SDN:P07::CF12N63" . "\"Content\" indicates a quantity per unit area. The \"atmosphere content\" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including \"content_of_atmosphere_layer\" are used. The chemical formula for the hydroxyl radical is OH. In chemistry, a \"radical\" is a highly reactive, and therefore short lived, species."@en . "" . . "3" . . "SDN:P07::CF12N63" . "2019-03-04 17:29:46.0" . . "3" . . . "accepted"@en . . "atmosphere_mass_content_of_hydroxyl_radical"@en . "false" .