Event 1: Whistler waves observed on November 4, 2018, around 15:07 UTC. First panel: solar wind background magnetic field components in the RTN frame and magnitude from the MAG instrument. Second panel: f_pe/f_ce ratio. In these two first panels the gray bars highlight the presence of dips in the background magnetic field (see Sect. 2.4). Third panel: magnitude of the proton velocity from the SWEAP/SPC instrument. Fourth panel: trace of the cross-spectral matrix. Fifth panel: peak value of the corresponding band-pass filtered measurements for the unique direction available for this data product. In the last two panels the two white lines indicate 0.2f_ce (local electron-cyclotron frequency) and the lower-hybrid frequency f_lh.