Table 1: Overview on data sets from the metabolomic case study for plant wounding experiments. The columns “Candidates” and “Filtered candidates” contain the number of marker candidates in the raw data set and the number of significant candidates in the filtered data set, respectively.

Data set Ionization Candidates Filtered candidates Samples per condition

1 Negative 24796 1719 9
2 Positive 23325 1785 9