Seasonal variation of airglow intensity for the O₂(0-1) Atmospheric band (nocturnal means) at El Leoncito (32°S, 69°W). This and the following plots only show nights with at least 150 individual data (with an average of 351, and maximum of 502).
next figure (OH intensity)             1997-2001             same (O2 intensity) for 2002-2003             2006             2007             2008             2009             2010             2011             2012             2013             2014             2015             2016             2017             2018             2019             2020             2022             2023             2024             2025