Simulated size distributions of the ISD at Saturn for the 8 positions along its orbit. The gravitational focusing in 2002 is clear for the largest particles, as is the strong influence of the solar cycle on the size distributions, especially for the smaller grains (cf. Fig. 4). The dotted straight line is the original reference distribution for n_H = 0.3 cm^-3. The black straight line is the reference distribution range for which simulations were done. This reference distribution is illustrative, and is not meant to imply that the extended MRN distribution would reflect the true grain size distribution in the LIC.