Lag-frequency spectra and coherence of Cyg X-1 between 0.5–1 keV and 2–4 keV for observation 0100320106. Colors were chosen to match Fig. 6 of Lai et al. (2022). a) Data during dipping events (magenta) show soft lags of up to ∼200 ms. b) Data outside of dips (green) show a strong change in time lag around 1–2 Hz. c) The coherence of the non-dipping data shows a dip at 1–2 Hz, while data taken during dipping events show an overall reduced coherence.