Box and whiskers plots of the CEOAE SEL signal and noise spectra elicited at the highest click level (73 dB peSPL) are shown for N=49 ear responses. The black plot with thicker lines shows the CEOAE SEL spectrum, and the gray plot shows the noise SEL spectrum. The boxes show the lower quartile, median, and upper quartile values. The whiskers extend from each end of the boxes to show the extent of the rest of the data, with the maximum length being the lesser of the full range of SEL spectrum and 1.5 times the inter-quartile range. Outliers are not plotted, and signal and noise plots are slightly displaced horizontally to clarify the main features of the box plots.