Index of ftp://ftp.cmdl.noaa.gov/data/barrow/ch4/flask
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README_surface_flask_ch4.html
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October 14 2015
ch4_brw_surface-flask_1_ccgg_event.txt
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October 14 2015
ch4_brw_surface-flask_1_ccgg_month.txt
77.00b
October 14 2015