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Fig. 11
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Spectral index difference between two spectral indices calculated in this study (LoLSS–LoTSS-DR2 and LoLSS–NVSS) and the TGSS–NVSS spectral index catalogue of de Gasperin et al. (2018). The dashed lines indicate the mean value and the bars on the right depict the 90 per cent interval of Δα.
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