Hellinger transformed MALDI-TOF MS intensity matrix of all studied specimens

The dataset contains hellinger transformed MALDI-TOF MS data measured with a Microflex LT/SH System (Bruker Daltonics) with a range from 3,000 to 15,000 m/z from 2,316 harpacticoid copepods from the North Sea (see publication for details). The rows contain the measured species. The first column contains sample names, the second column contains species names, the third column contains measurement weeks, the fourth column contains ethanol concentrations and the fifth column contains storage temperature. The remaining columns contain the 1,220 m/z values as names and the intensities as values.