Two cases of the dB_T–dB_N hodograms observed by the Solar Orbiter upstream of the shock. The magnetic field fluctuations dB_T and dB_N are reconstructed from the wavelet transform by averaging in the period range [3, 8] s. The first case is selected in the time interval between 04:14:06 UT and 04:14:44 UT on 2020 April 19 when 14° < θ_kB < 28°. The second case is selected in the time interval between 05:03:35 UT and 05:03:59 UT on 2020 April 19 when 22° < θ_kB < 34°. B_0l is the local mean magnetic field averaged in the selected period range and time interval.