Dispersive time delay within a narrow 2 MHz-band as a comparison to Fig. 3. For all 25 sub-bands, the time difference between the lower edge of the sub-band and the central frequency is shown in red, while the time difference between the upper edge and central frequency is shown in blue. The lower the frequency of the sub-band, the greater the amplitude of the time delay. As one data point is generated per subband for a given sub-integration, this adds a ~10 µs error to the data.