(Color online) Box and whiskers plot for pair-wise correlations of TEOAE residual waveforms in all adult ears. The pairs are positive and negative chirps at ΔL = 0 dB [PC-NC (0 dB)], positive and negative chirps at ΔL = 6 dB [PC-NC (6 dB)], click and positive chirp at ΔL = 0 dB [CK-PC (0 dB)], click and negative chirp at ΔL = 0 dB [CK-NC (0 dB)], click at ΔL of 0 and 6 dB [CK], positive chirp at ΔL of 0 and 6 dB [PC], negative chirp at ΔL of 0 and 6 dB [NC]. The box is the IQR with horizontal line as median, and outliers shown with + markers.