In [Fig 7](#pone.0131382.g001){ref-type="fig"}, the labels of the axes are interchanged. The authors have provided a corrected version here.

![Localisation of the fluorescence components.\
Representation of the four groups of wavelength coordinates determined by correlation analysis on the excitation-emission space.](pone.0131382.g001){#pone.0131382.g001}
