Nocturnal means acquired during 2012. Nights with more than
100 observations (red circles), or less (but at least 40; blue circles) are distinguished.
Intensity scale is adjusted for consistency with data before November 2002 (detector change).
The green line here corresponds to the climatology explained in
Reisin and Scheer (2009).
next figure (2012 OH intensity)
same (O2 intensity) for 1997-2001
2002-2003
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2012 overview
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