Polarized (pB, top left panel) and total (B, top mid panel) brightness images obtained with LASCO-C2. pB image was acquired on June 1, 2001 at 9:00, whereas the B image was acquired on June 1, 2001 at 09:07. The electron density n_e (bottom left panel), K-corona K_inv (bottom mid panel) and F-corona F_inv maps (right panels) are calculated using the inversion technique (see Sect. 3.1). F_inv is shown in polar and Cartesian coordinates. The horizontal axis corresponds to the polar angle ϕ in degrees, whereas the vertical axis is the heliocentric distance r in the R_⊙ units in all panels except the bottom right, for which both axes correspond to the heliocentric distance. The color bar represents the intensity in MSB units in all panels except the n_e map, for which it represents the density in cm⁻³ units.