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Observation Data

You can search the observation graphs of the Sun within a month.

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Searchable data on this website include: GOES and ACE Satellite data, Kp and local K index and various local ground based observation data.

Date(yyyy-mm-dd)
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  • X-ray fluxSearch  Open in new Window.

    Graphs of 5-minute solar x-ray flux values measured on the GOES satellite.

    Proton fluxSearch  Open in new Window.

    Graphs of 5-minute proton flux values measured on the GOES satellite.

    Electron fluxSearch  Open in new Window.

    Graphs of 5-minute electron flux values measured on the GOES satellite.

  • Kp-index Search  Open in new Window.
    Icheon Ki-indexSearch  Open in new Window.
    Gangneung Kg-indexSearch  Open in new Window.
    Jeju Kj-indexSearch  Open in new Window.
    Korea Kk-indexSearch  Open in new Window.

    The K-index ranges from 1 to 9. The K-index is calculated during a 3-hour interval based on the average values observed from various regions of the Earth. K-indices from Icheon, Gangneung and Jeju stations in South Korea are also available.

    MagnetomterSearch  Open in new Window.

    The variations in the geomagnetic field measured by GOES satellites (the horizontal components of the Earth’s rotation axis, Hp) are averaged every minute. The nanoTelsa is used as the unit of measurement.

    Solar radio 30~2500MHzSearch  Open in new Window.

    Solar radio emissions provide one day values of the absolute solar flux in the wavelength bands of 30MHz-2.5GHz, as measured by the Icheon station of RRA.

  • Solar radio 2.8HzSearch  Open in new Window.

    Yesterday and today’s values of absolute solar flux in the wavelength bands, as measured in five different solar radio observatories around the world, are shown.

    Solar ImageSearch  Open in new Window.

    A total of 12 different types of solar images in various wavelength bands are displayed. Some of the solar images are observed by extreme ultraviolet and include the solar corona, solar white light and solar magnetic field distribution.

    Ichoen ionosondeSearch  Open in new Window.
    Jeju ionosondeSearch  Open in new Window.

    It shows images of the ionosphere data as measured by Icheon and Jeju stations. By imaging data every 15 minutes, it provides daily images with lists and observed values of foF2 plots, which display the intermittent variation of the ionospheric vertical maximum usable frequency.

  • Ichoen magnetometerSearch  Open in new Window.
    Gangneung magnetometerSearch  Open in new Window.
    Jeju magnetometerSearch  Open in new Window.

    K-indices are calculated based on D and H components by using the magnetometers in Icheon, Gangneung and Jeju stations.

    Icheon TECsSearch  Open in new Window.
    Jeju TECsSearch  Open in new Window.

    The values of the TEC (Total Electron Content) in the ionosphere observed in Icheon and Jeju stations are displayed. The values might temporarily fluctuate due to solar activity or geomagnetic storms.

    ACE Magnetic Field Search  Open in new Window.
    ACE PlasmaSearch  Open in new Window.
    ACE Low Energy
    Electrons & Protons
    Search  Open in new Window.
    ACE High Energy ProtonsSearch  Open in new Window.

    The averaged graphs of real-time variation in the solar wind’s magnetic field and solar particles, as observed by the ACE satellite, are shown.