Many thanks to Dr. Baptiste Cecconi for his analysis of Jovian hectometric radiation (HOM) with attenuation lanes in STEREO WAVES B 140626.
Many thanks to the Taxpayers of France, and the Nancay Decametric Array Team at the Nancay Radio Astronomy Station of Paris Observatory.
The vertical scale is hours and minutes of Universal Time
The horizontal scale is MHz
The dynamic range from black to white is 20 decibel