Figure 6 in Vertical distribution and migration of planktonic polychaete larvae in Onagawa Bay, north-eastern Japan

Figure 6. Box plots of vertical distribution of two spionid larvae: a, Pseudopolydora achaeta and b, Prionospio spp. The central line in the box represents the median, the upper and lower boundaries of the box represent the quartiles, and the vertical bar represents the 95% range of larval distribution (left axes). The dashed wavy lines and dark shaded areas represent the tidal level (right axes) and night-time, respectively.