Complexity-entropy plane for the line-of-sight magnetic field B_z (a) and the horizontal electromagnetic energy flux S (b) during a period of supergranular vortex expansion of 37.5 min. The timings of frames 175, 183, 191, and 200 are indicated by the four respective symbols. The dashed line shows the values of C and H obtained from two-dimensional fractional Brownian motions (2D FBM) with the Hurst exponent, h, ranging from h ≈ 0 (lower right corner) to h ≈ 1; the crescent-shaped curves denote the minimum and maximum values of the complexity, respectively, for a given value of the entropy. Error bars in the insets indicate one-standard-deviation uncertainties of H and C estimated by bootstrapping ordinal patterns and their distributions from the B_z and S images.