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Kakioka K-index on 17
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 UT    K    Comments
00-02: 1    0: calm
03-05: 5    7: SC
06-08: 7    9: main phase
09-11: 5    3: irregular disturbance
12-14: 6    3: irregular disturbance
15-17: 6    3: irregular disturbance
18-20: 5    3: irregular disturbance
21-23: 6    3: irregular disturbance
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K-sum: 41
K-max: 7
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MAGNE KA171 57566 56079 33333
REMARKS MAGNETIC STORM OCCURRED SUDDENLY AT 0445 AND CONTINUES NOW AND SO 
FAR RANGE OF H WAS ABOUT 237 NANOTESLAS