Energy-resolved time lag maps of observation 2636010101 of Cyg X-1 in the hard state. The maps are calculated between small energy bins and three reference bands, written in the top right corner of each plot. For reference, we also show the power map in the top left panel. Pixels where the coherence has an uncertainty larger than 50% of its value are set to black. Colored brackets on top denote the frequency ranges chosen for the lag-energy spectrum in Fig. 11.