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2007-03-22 13:59 Plumbago 1700×1429× (84256 bytes) [[Time series]] of [[atmosphere|atmospheric]] concentrations of [[CFC-12]] from 1931 to 2003. Mixing ratio concentrations are shown for the [[Northern hemisphere|northern]] and [[Southern hemisphere|southern]] hemispheres, and are expressed as [[Parts-pe
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{{Information |Description={{en|en:Time series of atmospheric concentrations of en:CFC-12 from 1931 to 2003. Mixing ratio concentrations are shown for the northern and [[:en:Southern hemispher...