Each plot should show a signal which varies erratically during the night, but is smooth and steady during the day. The transition at sunrise and sunset is a very distinctive rise and fall pattern. When a flare occurs, the prompt X-ray emission from the Sun modifies the ionosphere and produces a sudden enhancement in the very low frequency 24 kilohertz radio signal from Cutler, Maine. Records of this type are kept by several amateur astronomers who coordinate their efforts through the American Association for Variable Star Observers . A pdf version of the receiver documentation is available here .
Additional information is available on request .