Fig. 5.
Density of granules per Mm2 corrected for the pixel area. Dots correspond to individual measurements, and crosses show daily averages with estimated error bars. We recall that we selected one single day for each month of the observation period. Dates where spots (pores) are present in the field of view are indicated with red (blue) symbols. Variations of the 13-month smoothed monthly mean total sunspot number (SILSO World Data Center 2008-2019: International Sunspot Number Monthly Bulletin and online catalogue, https://wwwbis.sidc.be/silso/) are overplotted (solid line).
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