Time series of maps with a FOV of 8″ × 8″ centred on the magnetic flux concentration showing several calculated quantities from the Ca II spectra. First row: Bisector velocity at 70% of the line depth of the Ca II at 8542.1 Å line core. The maps include zoomed views (1.5″ × 1.5″) of the magnetic flux concentration where two points of interest (POIs) are indicated (POI 1 black ×-sign and POI 2 black +-sign). Red contours (drain phase) and blue contours (upward-flow phase) mark the areas of similar profiles of the POI 1 shown in Fig. 7. Second row: Bisector velocity at 40% of the line depth of the Ca II at 8542.1 Å line core. Third row: Normalised intensity of the core of the Ca II line at 8542.1 Å in a logarithmic scale. Contours mark regions of intense (> 2.5σ_p) TCP of the photospheric Fe I line at 6173.3 Å (orange contours correspond to negative magnetic flux concentrations and light green contours correspond to positive magnetic flux concentrations). Fourth row: K-index defined in Table 1 in logarithmic scale including contours of intensity excess (> 0.2I_c) of the K_2V band (red) and the intensity excess of the K_2R band (blue). Fifth row: Emission strength defined in Table 1 in logarithmic scale. Sixth row: K₂ asymmetry defined in Table 1 in percentages. Several maps include a central black contour to show the location, scale, and evolution of the MBP area. An animation is available online.