Examples of Minkowski curves of Gaussian, weakly non-Gaussian, and log-normal temperature random field (dotted, dashed, and solid lines, respectively) for three values of the mean temperature (T = 10⁴ K, blue lines; T = 10⁵ K, green; T = 10⁶ K, red). The amplitude of the MFs of Gaussian and weakly non-Gaussian random fields are normalised to that of the LN random field; their apparent skewness is due to the logarithmic scale. For illustrative purpose, the parameters are fixed to σ₀ = 0.3, (S​₀, S​₁, S​₂) = (0.2, 1, 0.1), λ = 25.