Upper row: σ = 1 contours in xz-cross-section corresponding to K.80 (green lines), K.90 (blue lines), and K.99 (red lines), and the 1σ standard deviation in the x-directions over the time intervals listed in Table 2. Each column presents poloidal cross-sections at azimuthal angles in 45° increments. Bottom row: Bernoulli parameter −hu_t = 1.02 contours, where we otherwise show the exact analogs for it as in the σ = 1 contours.