Stellar wind conditions in the planetary frame as a function of stellar rotation phase. From the left, the columns refer to the TOI-1860, DS Tuc A, HD 63433 (2023), and HD 63433 (2024) systems. From the top, the panels show the wind density (ρ), relative velocity (Δu), ram pressure (P_ram), and Alfvén Mach number (M_A). The sub-Alfvénic regime (M_A < 1) of the stellar wind is shown as a green shaded region. In the M_A panel of HD 63433, we also show the computation for planet d from 2023 data as a dashed line (see Bellotti et al. 2024).