Fig. 1

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High-resolution sunspot images corresponding to the datasets shown in Table 1. The highlighted quiet Sun (blue), penumbra (orange), and umbra (green) regions were obtained with intensity thresholds. Pixels within the highlighted regions have been averaged into their respective spectral profile. The images are of the continuum left of Fe I 6173 A, Fe 16302 A, and the Hα pseudo-continuum. All figures have an observed resolution of 0.058″/pixel.
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