Fluctuation function F as a function of temporal scale for a typical pixel in CH1 (left) and QS1 (middle). The generalized Hurst exponent α is obtained from the linear fits in the range ∼15–60 minutes. R/S as a function of temporal lag for the same pixel in CH1 (right). The Hurst exponent H is calculated from the linear fit in the range ∼19–75 minutes to overlap with the range for α. The scaling symmetry actually extends from ∼2 to  ∼300 minutes as shown in the figure .