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 Strat-trop exchange in GCC_13.4.0-rc.1 for year 2019
 (i.e. species flux across 100 hPa)

 Units: Tg/yr

 Annual mean is weighted by the number of days per month
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                     O3
Jan 2019       823.9876
Feb 2019       729.3829
Mar 2019       518.3848
Apr 2019       558.3914
May 2019       375.4345
Jun 2019       390.5531
Jul 2019       398.8887
Aug 2019       529.2926
Sep 2019       678.0426
Oct 2019       518.8837
Nov 2019       652.6659
Dec 2019       472.0234
Annual Mean    552.2084