Fig. 3
(a–i, b–i and c–i) show the number-based particle size distributions \(p_i\) for selfie A2, shown in Fig. 2, corresponding to the sampling locations \(\alpha\), \(\beta\), and \(\gamma\), respectively. (a–ii, b–ii and c–ii) present the measured shape descriptors, solidity S versus circularity C, for points \(\alpha\), \(\beta\), and \(\gamma\), with associated histograms. (d) The cumulative number-based size distribution F, for each of the sampling locations, represents the probabilities of particles of size under \(D^A_i\). (e) The mean particle diameter \(\overline{D}^A\) and the distribution standard deviation \(\sigma\) for each of the sampling locations are shown.
