Geometrical comparison of the two depressions, showing the measured changes. The dotted red lines indicates the shape of the depression before perihelion; there is an uncertainty of about 1 m on the position of this contour, due to the different illumination conditions of the images used to define the contour before and after perihelion. The increase in lengths, widths, and areas, are labeled. Table 5 summarizes the measured changes, with the value of growth and growth ratio for each parameter.