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The NDVI histograms for the shadowed and sunlit pixels for the August 2014 imagery (a), the NDVI histograms for the shadowed and sunlit pixels for the June 2015 imagery (b), the NDVI histograms for the shadowed and sunlit pixels for the July 2015 imagery (c), the NDVI histograms for the shadowed and sunlit pixels for the May 2016 imagery (d)
