How a time series of B_R (blue) in conventional (clock) time can be visualized in natural time (right panel). The left panel shows 2 Hz IMF components (colored circles) and magnitude (black line) during the period 04:00:00 to 04:10:00 UTC on 2025 December 1, together with their averaged values (continuous lines of darker color) with cadence τ_c = 4 s. The latter measurements are used for the estimation of the distribution of p_k of NTA which is shown in the right panel. Here, N = 150 corresponding to 10 minutes with a cadence of 4 s.