1. Data pre-processing was the same as described in a. OMP standard.

About the data
1. Each *.csv file contains the wavelength information in nm as column and row headers (columns=excitation, row=emission) and the fluorescence observations processed as described above.
2. Each file is named with its sample identifier.
3. The file "metadata_wastewater_june.csv"  contains information on the sample type and all other useful information for the description of the samples detailed in the main text.
4. The zip-file contains  *.mat (MATLAB) files that hold data equivalent to the csv-files in a format that is compatible to the drEEM toolbox (dreem.openfluor.org)
