The film “009-06-21-ExpConstr8-partieCliquee.mov” is a 50 minute sequence where termites are dropped in an empty arena containing only a 5 mm layer of damp soil, and where they start immediately to dig holes and assemble the excavated material until the emergence of first pillars. The behaviour has been monitored every 2/3s (with 30fps this means to analyse the movie every 20 frames), sampling each termite’s position and its behaviour (2 = exploration, 3 = grooming/social behaviour, 4 = deposit a soil pellet, 5 = dig soil, 6 = transport the soil pellet). Soil handling has been identified by the procedure described on the left side (movie “ExtraitPriseDepot-Exp22.mov”). The resulting data can be found in the file “009-06-21-ExpConstr08.txt”. Each sampled position/behaviour of a termite is summarized by a line containing the following columns: File: name of the original movie file (which has changed since then) Ident Behav: type of behaviour (5 dig, 6 transport, 4 deposit, 3 grooming, 2 exploration) Time: frame number XF: x-coordinate of termite head YF: y-coordinate of termite head XT: same as XF YT: same as YF XC: x-coordinate of the circle center describing the arena YC: y-coordinate of the circle center describing the arena RC: circle radius (corresponding to 21 mm)