Solar and geomagnetic data (last month)

Date Solar flux Sunspot number Planetary A index K indices
(3-hour intervals)
Min-max solar wind speed (km/sec) Number of flares (events)
STAR SEC STAR SEC Daily low - high Planetary Boulder C M X
20040531 95.4 58 54 14.8 14 8-22 42333332 43333222 462-546 5    
20040530 99.6 55 64 13.3 13 5-21 32143334 32233334 377-505 1    
20040529 101.2 64 57 14.4 14 10-21 33343323 43343333 349-459      
20040528 102.4 60 52 10.0 9 2-17 20123333 21322233 331-438 3    
20040527 101.8 54 62 7.4 6 4-12 11322221 22221011 330-423 2    
20040526 103.3 62 89 7.0 6 4-12 11213322 11111223 374-428      
20040525 102.4 106 101 8.8 8 5-12 21333222 20222222 413-552      
20040524 105.2 125 118 12.8 11 7-23 32433222 32433332 435-539 2    
20040523 104.0 130 127 12.4 12 8-18 33233233 33332433 443-505 4    
20040522 102.4 88 79 12.3 11 7-23 23433222 33423312 449-535 6    
20040521 106.9 100 82 10.9 10 6-18 33323322 33323323 426-557 3 1  
20040520 104.6 86 109 14.1 13 6-43 22352233 21353333 348-553 3    
20040519 108.8 114 87 8.3 6 4-14 12113222 13133433 302-374 2    
20040518 107.8 103 91 5.6 4 3-9 11122111 21223331 284-343 3    
20040517 111.1 95 147 6.8 5 2-14 21012322 11112232 294-341 1    
20040516 118.3 119 148 5.8 4 4-7 22112112 22212222 285-333      
20040515 115.3 119 117 10.1 9 6-23 42222222 43223322 298-360 1    
20040514 109.6 125 98 9.0 8 5-12 23113222 33201022 319-435      
20040513 100.8 104 107 14.9 13 7-29 23433333 33522433 370-428 3    
20040512 98.8 76 83 12.4 11 7-30 34222232 44321232 378-437 1    
20040511 90.2 55 46 10.9 10 3-20 33112234 33212233 378-435      
20040510 93.0 28 55 7.8 7 5-11 12212233 22212213 361-426      
20040509 93.2 59 57 7.8 6 5-12 23212221 23223212 392-466      
20040508 87.2 42 37 10.6 10 8-13 33223332 33132222 444-502      
20040507 85.2 37 34 17.4 17 9-28 34423432 44423423 447-564 1    
20040506 86.4 38 30 9.3 8 7-14 22322232 23323322 443-621      
20040505 88.5 36 47 13.8 13 7-18 23333333 23343443 376-670      
20040504 87.4 53 62 10.9 10 6-16 23323223 33322223 349-447      
20040503 91.3 68 50 8.3 7 5-10 21222222 12332222 339-374 1    
20040502 97.5 53 41 7.6 6 2-15 31022222 22122222 314-446 10    
20040501 94.2 75 65 13.5 13 11-19 33333333 33232313 358-454 2    

This page is normally updated once a day by Jan Alvestad. All values are preliminary.

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