Nocturnal means acquired showing nights with more than 100 observations (red circles), or less (but at least 40; blue circles). The green line here corresponds to the climatology explained in Reisin and Scheer (2009) .
next figure (O2 intensity)             same (O2 temperature) for 1997-2001             2002-2003             2006             2007             2008             2009             2010             2011             2012             2013             2014             2015             2016             2017             2018             2019             2020             2022             2023             2024                         2025
2020 overview
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