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Fig. 10.
Spectral index distribution of the 520 matched sources from Figs. 8 and 9. The mean of the distribution is 
and the median is 
. The mean spectral index found cross-matching half a million sources from TGSS (151 MHz) and NVSS (1400 MHz) surveys is also shown (
; de Gasperin et al. 2018a).
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