CHU 3.3
Notice the stability of the daytime signal, just a few millihertz of variability.
CHU 3.33 - 24 hour spectrograph
CHU 3.33 SUN RISE
CHU 7.85 MHz 24 hour Spectrograph
A straight average of the 24 hour CHU 7.85MHz from above, is 8 millihertz low