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  Annual Global O3 Strat-Trop Exchange in v11-02d
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Jan         849.680 Tg/yr
Feb         614.831 Tg/yr
Mar         544.230 Tg/yr
Apr         482.005 Tg/yr
May         409.658 Tg/yr
Jun         373.732 Tg/yr
Jul         350.818 Tg/yr
Aug         436.465 Tg/yr
Sep         472.153 Tg/yr
Oct         498.423 Tg/yr
Nov         496.608 Tg/yr
Dec         611.957 Tg/yr
 
Annual      511.713 Tg/yr
 
NOTE: O3 STE flux is computed using the up/down mass 
      flux diagnostic (UP-FLX-$) at 100 hPa.