Fig. 7.
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Modeled inflows 
(panel a), and travel-time perturbations without magnetic mask 
(panel b) and with magnetic mask 
(panel c) from May 1996 to April 2019. The conversion constant for producing 
and 
is derived from the HMI data averaged over the separation distances 6°–18°. The same smoothing as in Fig. 2 is applied. The black lines show the mean active latitudes.
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