The data files are individual ascii text files, each representing a displayed data specified in the name of the file.
The data files are organized in columns with a tab separator. The first line indicates the measured quantity and the unit for each column. Each successive line corresponds to one data point.

The first column is usually the X axis, and the others the Y axis. This is not the case for Figures 3, S4 and S5 where the X axis is the 3rd column and the the other columns are for Y.
This is also not the case for Figures 4 and 5, where the different experimental conditions diplayed on the X axis in the article are distributed over the first three columns, then the next pairs of columns are Y and standard deviation of Y.