Traction data with 1 line = 1 mandibular grasp by an ant.

ObservationId : Id number of the movie where the grasp is observed
ANGLE : slope angle in degrees (the nest being downward)
PRESSION : pressure in Toulouse the day the experiment is run measured in hPa
Temperature : room temperature during the experiment
Colonie : colony identifier
Humidite : percentage of relative humidity in the room
Time : moment in s from the begining of the video when the mandibular grasp starts
TotalLength : total length of the movie in seconds
Condition : condition determining the initial position of the obstacle (Half means the obstacle starts in the middle of the tube with a position of 0.15m, Search means the initial position of the stick depends on previous initial positions ans extractions)
Morph : states whether the mandibular grasp is made by a media or Major ant
Direction : Gauche means left/downward pulls (toward the nest) and Droite means right/upward (toward the foraging area)
duration : duration of the grasp in seconds
TimeStop : absolute time when the grasp ends
pos_init : position at the begining of the grasp in meters from the nest/lower extremity of the tube
pos_end : position at the end of the grasp in meters from the nest/lower extremity of the tube
d : absolute distance of displacement of the obstacle in m 
avgV : average velocity in m/s during the grasp
mechGood : boolean value taking 1 if the ant is pulling in the direction needing less mechanical work
antForce : force in Newton the ant is applying to move the object in the chosen direction, angle, and friction coefficient
gammaObs : relative fitness of the upward solution at the begining of the grasp (0 meaning the ant should pull downward, 0.5 meaning both options are equivalent, and 1 meaning the ant should pull upward)
gammaObsEnd : relative fitness of the upward solution at the end of the grasp (0 meaning the ant should pull downward, 0.5 meaning both options are equivalent, and 1 meaning the ant should pull upward)
mu : coefficient of friction estimated 
censored : Boolean taking 1 if this grasp is censored (not knowing when it ends)
Wmin : minimal mechanical Work exerted by the ant's pull in Joule
DirBool : takes 1 if the pull is upward and 0 if downward
distRest : remaining distance to the extremity of the tube in the direction the ant is choosing (in meters)
Traction : takes 1 if the grasp led to an effective pull is effective (more than 1cm displacement) in the direction of the grasp
Impulse : measures the impulse of the pull (force times duration, expressed in N.s)
Power : average power during the grasp (in Watt)
GraspID : identification of the grasp number
rightDirection : takes 1 if the ant is pulling in the direction needing the less mechanical work to extract the obstacle.