Fig. 2. Directly measured la probe installed in the wood block as a function of Tair (A) and TWB (B). The corresponding values of 
stem are within the TDR resolution for a wide range of both air and wood block temperature.
Fig. 2. Directly measured la probe installed in the wood block as a function of Tair (A) and TWB (B). The corresponding values of stem are within the TDR resolution for a wide range of both air and wood block temperature.