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  Annual Global O3 Strat-Trop Exchange in GC_12.6.0
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Jan         773.917 Tg/yr
Feb         731.996 Tg/yr
Mar         790.563 Tg/yr
Apr         486.826 Tg/yr
May         456.835 Tg/yr
Jun         405.299 Tg/yr
Jul         513.752 Tg/yr
Aug         479.815 Tg/yr
Sep         627.421 Tg/yr
Oct         651.818 Tg/yr
Nov         693.528 Tg/yr
Dec         659.845 Tg/yr
 
Annual      605.968 Tg/yr
 
NOTE: O3 STE flux is computed using the up/down mass 
      flux diagnostic (UP-FLX-$) at 100 hPa.