Figure 6
From: Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types
Evolution of the pulse rate of units C (a) and D (b). Error bars are red when quantification error is the greatest source of error (Q), green when error due to the noise is the greatest source of error (N), blue when intrinsic dispersion is the greatest source of error (ID). A letter corresponding to the largest source of error is given on top of each error bar. The line is the linear interpolation by least-square error of the points displayed in the graph (the coefficient of determination \({R}^{2}\) being close to 0.98).
