Normalized intensity of the slices at 45° longitude of the six Carrington maps represented in Fig. 2 at 2.5 R_⊙ for CR 2091 (color-coding given in the figure legend), together with the weighted averaged intensity computed as described in Sect. 2.2, shown as a solid black line and indicated as “Merged” in the legend. The slices closest in time to the reference time (Δt_i at 45° longitude, for each map, as indicated in the legend) are also shown using thicker lines. The slice contributing mostly to the merged slice (black line) is the one with Δt_i at that longitude of 1.1 days (slice of STB/E, cyan line).