Correction to: Scientific Reports https://doi.org/10.1038/s41598-017-00805-5, published online 12 April 2017

This Article contains a typographical error in the Materials and Methods section under subheading ‘Data Analysis’.

\(H\text{'}=-{\sum }_{i=1}^{s}{p}_{i}{\rm{i}}\,\mathrm{ln}\,{p}_{i}\)

should read:

\(H\text{'}=-{\sum }_{i=1}^{s}{p}_{i}\,\mathrm{ln}\,{p}_{i}\)