Zoomed-in regions within the O₂A-band of three datasets: Both dualons (black), dualon 1 (blue), and dualon 2 (green). Each dotted line is isolated and fitted with a Voigt model. The shaded area is the uncertainty of the fit. The black, blue, and green transparent shading correspond to the fit uncertainties for both dualons, only dualon 1, and only dualon 2, respectively. The FWHM results are reported in Table 2.