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. 2021 May 17;10(5):996. doi: 10.3390/plants10050996

Figure 4.

Figure 4

Seasonal changes in air temperature (1) (green line—positive temperatures, blue line—negative temperatures) and daylight duration (2) in Northeastern Yakutia (the Pole of Cold the Northern Hemisphere) in 2019. Air temperature is represented by mean daily values.