Figure 2
From: Interoccurrence time statistics in fully-developed turbulence

(a) The PDF P(τ/σQ) of the IOTs for the normalized velocity time series for six Reynolds numbers Reλ. (b) Dependence of the parameters q and b on the Reynolds number. For large Reλ they approach β ≈ 0.35 and q ≈ 1.62. The associated q-exponentials, Eq. (1), with the asymptotic values of q and β are shown by dashed lines in (a).