Erratum to: J Mater Sci (2015) 50:7673–7680 DOI 10.1007/s10853-015-9332-2

There were errors in Fig. 4 of the published version. The corrected Fig. 4 is shown below.

Fig. 4
figure 4

Clustering of sorbed water molecules in birch and spruce determined using the Zimm–Lundberg approach