. "2009-07-06 16:21:17.0" . "false" . "SDN:P07::CF12S16" . . . . . "SDN:P07::CF12S16" . . "2009-07-06 16:21:17.0" . . "1" . "atmosphere_moles_of_methane"@en . "" . "accepted"@en . . . "The construction \"atmosphere_moles_of_X\" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species."@en . "SDN:P07::CF12S16" . . "1" .