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. 2021 Oct 27;12:734944. doi: 10.3389/fpls.2021.734944

Figure 6.

Figure 6

Distribution of pixel temperatures for sunlit, shaded, and all vegetation as classified by GRVI > 0 for the five UAV data collection dates. Sunlit vegetation was identified as pixels with a reflectance value greater than the maximum value in the first cluster of a five-cluster k-mean approach based on the blue band. Average air temperature (Ta) during each flight is also displayed.