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Fig. 5. Comparison of the gas diffusion coefficient values measured in this study and values calculated from the Millington-Quirk and new Moldrup models. ({circ}•: 10 cm; {diamond}{diamondsuit}: 20 cm, {triangleup}{blacktriangleup}: 30 cm, open symbols are values under wetter conditions (condition WT), and solid symbols are values under drier conditions (condition DR).