U.S. Geological Survey

Climate-Vegetation Atlas of North America

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Figure 8

Figure 8. Histograms illustrating distributions of bioclimatic temperature variables (mean temperature of the coldest month (MTCO) and growing degree days (on a 5°C base--GDD5)) among points of the 25-km grid for North America. The height of each column represents the number of grid points that occur within the specified range of the bioclimatic variable on the horizontal axis.

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