Estimation of the pheromone concentrations

<b>Total time spent previously in the neighbourhood of the ant</b><b><br></b><b>column1</b>: id of the experience<b>column2</b>: time (s)<b>column3</b>: total time spent walking<br><b>column4</b>: total time spent stopping<br><b>column5</b>: total time spent stopping over the total time<br>