Japanese

The international 5 and 10 quietest and 5 most disturbed days [1932 - ]


Selection

Explanation on the quietest and disturbed days By GFZ, Potsdam.
International Q-Days and D-Days are now derived by GeoForschungsZentrum (GFZ) Potsdam from Kp index.

GFZ Potsdam Q-days and D-days Page.



List up Q-Days and D-Days: about 0.5KB/year / Format

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