<p><b>a</b>) Mean cluster size, , normalised by dividing by
the maximum cluster possible, <i>l</i><sup>2</sup> and b) Mean
standardised bout size (size/drive) for individual ant-bouts. Ants were
assigned to threshold bins of logarithmically increasing width. The
different curves represent different fixed drives (N simulations per
drive = 500, ○;
δS = 1×10<sup>−2</sup>, ⧫;
δS = 1×10<sup>−1</sup>, •;
δS = 1×10<sup>0</sup>, ▪;
δS = 1×10<sup>1</sup>).</p