Cumulative size distribution of the subunits of particle G identified in the 15 nm resolution scan (Fig. 1c). On the left we show the probability that a subunit is smaller than the indicated value, and on the right we show the number of detected subunits. The log-normal fit is shown in blue together with its uncertainty interval in light blue. The verticallines denote the arithmetic (black) and fitted (blue) mean values with shaded uncertainty intervals.