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Figure 3


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Evolution journalière de la concentration de CO2 [ppm] à 15 et 3 m au dessus de la canopée de la pinède à Hartheim. Moyenne de trois journées consécutives, mai 1992. Daily pattern of the CO2 concentration [ppm] at 15 m height, 3 m above the canopy at Hartheim pine forest. Mean values of three following days of radiation, May 1992.

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