Strength is represented by color with red being strongest and blue weakest.
The radio frequency increases along the vertical axis of the display from bottom to top and time increases along the horizontal axis from left to right. Depicted here are three examples of radio signals from Jupiter dubbed Jovian Type III bursts. The name comes from a radio astronomical term for certain solar emissions which have a similar shape when displayed in a frequency-time display like this. This type of emission was discovered in Voyager data obtained in 1979. The emissions have also been observed by Ulysses and Galileo.