Overview of Encounter 01, 04, and 05. Row a: magnetic field with blue, orange, and green curves being radial, tangential, and normal components (RTN coordinates) and the black curve being the magnitude. Row b: radial ion flow speed (blue) and ion thermal speed (orange). Row c: ion density (blue) and radial distance of PSP to the Sun (orange). Row d: spectral slopes of the magnetic field in Alfvén speed (blue) and velocity (orange). The two dashed lines mark the values 3∕2 and 5∕3 for reference. Rows e–h: σ_c, σ_r, E_b, and E_v, respectively, as defined in Sect. 2. In each panel of these four rows, three curves are plotted and they correspond to wave band 2 (blue), 5 (purple), and 8 (yellow), respectively. All quantities were averaged or calculated through Fourier analysis in the 2048 × 0.874 ≈ 30 min time window as described in Sect. 2.