Experiments are presented by day in folders. The initial diameters or radii of the colonies are in three separate files. Each image file corresponds to one colony. The file name, say 14mul1.tif, means that the colony was inoculated with 14 microliters of culture and the plate number is 1. The times in seconds between the imaging and the start of the experiment are given in files named "Time.txt". PA21 refers to Pseudomonas aeruginosa at 21C PA37 refers to Pseudomonas aeruginosa at 37C EC refers to Escherichia coli at 37C