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  Annual Global O3 Strat-Trop Exchange in v11-02d
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Jan         849.489 Tg/yr
Feb         614.603 Tg/yr
Mar         544.007 Tg/yr
Apr         481.821 Tg/yr
May         409.667 Tg/yr
Jun         373.860 Tg/yr
Jul         350.910 Tg/yr
Aug         436.388 Tg/yr
Sep         471.763 Tg/yr
Oct         498.076 Tg/yr
Nov         496.348 Tg/yr
Dec         611.618 Tg/yr
 
Annual      511.546 Tg/yr
 
NOTE: O3 STE flux is computed using the up/down mass 
      flux diagnostic (UP-FLX-$) at 100 hPa.