Histograms of different properties of all isolated MHs found in 2020 and 2021 with Solar Orbiter (blue) and MHs with LWs (red). (a) MH depth calculated as ΔB = B₀ − |B|. (b) MH depth normalized by the background level, ΔB/B₀. (c) Maximum absolute magnetic field gradient inside the MH. The magnetic field gradient is taken by differentiating |B| with respect to time. (d) MH rotation, taken as the angle between the magnetic field vectors after and before the MH. (e) Size in seconds of MHs, calculated from the time of the last point of the MH minus the first point of the MH. (f) Background level of the magnetic field in the five-minute interval where the MH was identified. The error bars are obtained assuming a Poisson distribution that describes the statistics in each bin and are defined as , where N is the number of counts in a bin.