A method of processing a set of data collected by at least one sensor at successive points on the travel over a plot of land by at least one vehicle. Each piece of the data being recorded with a time lag in relation to the vehicle passing a given point on the plot of the land, and being associated with a recording time and with a geographical position of a measuring point supplied by a geolocation system. An optimum difference value is estimated by minimizing a degree of projection of a three-dimensional map of values measured at each geographical point, and correction of the data being measured from this difference.
