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Geomagnetic activity in May 2008

Mean Ap6.3No. 1046 of 1138
G1+ days1
G3+ days0
Max Ap125 May 2008

Daily Ap

Ap1: 812: 113: 114: 85: 126: 967: 48: 49: 310: 411: 41112: 313: 314: 315: 216: 41617: 118: 219: 620: 821: 102122: 923: 824: 725: 526: 32627: 328: 1129: 930: 1031: 931

Daily max Kp

DateMax KpApLevel
2 May 20085-11G1

Same month a year earlier

MonthMean ApG1+G3+
May 20077.930
May 20086.310
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.

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Mean Ap 6.3 in May 2008, No. 1046 of 1138 months since 1932; 1 days reached G1 or higher.