March 11, 2015
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The Level 3 (L3) files for Niwot Ridge were removed since these L3
files were created BEFORE the Niwot Ridge team (Sean Burns) submitted
corrected NEE values in 2011 for the entire period of record. Level 2
files for Niwot Ridge, located at

ftp://cdiac.ornl.gov/pub/ameriflux/data/Level2/Sites_ByName/Niwot_Ridge

are fine and offer the most recent and corrected data.