This plot represents the relative signal strengths over time (just over a day is shown) of DCF-39 near Burg, Germany, in red, and of HGA-22 from Lakihegy, near Budapest in Hungary, in green. They are of the 'space' frequencies of 138.8304 kHz and 135.43kHz respectively.
No apologies for the interesting colour schemes; 3-D clip-on glasses may help.
