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
STAR SEC STAR SEC Daily low - high Planetary Boulder C M X
20030531 113.1 81 57 19.8 17 5-52 55313322 46322322 555-775 6 1  
20030530 117.2 91 62 51.1 49 19-188 84434545 74334544 558-782 5    
20030529 124.3 92 98 91.4 89 19-231 54436788 53435687 565-814 1 2 1
20030528 130.2 135 116 38.1 36 21-65 65554444 65444443 585-716 15   1
20030527 128.8 117 116 26.0 26 16-41 44334345 44334435 452-646 2 2 1
20030526 125.1 116 65 19.5 18 12-33 43433334 42423334 440-539 5 2  
20030525 121.1 83 51 22.6 22 10-40 55432434 55432433 473-631 1    
20030524 116.8 49 84 22.6 23 14-36 35534344 35423433 431-581      
20030523 117.9 91 87 21.1 21 11-45 34453433 24342323 443-509      
20030522 118.4 111 110 26.0 25 10-40 55434432 55424433 451-528 4    
20030521 119.3 100 79 21.0 20 6-40 34223445 34223444 353-563 1    
20030520 117.1 82 77 13.6 12 9-19 33333233 33332323 379-454 4    
20030519 114.7 123 75 12.6 12 6-20 33232334 32233333 382-448      
20030518 109.0 72 79 10.5 10 6-15 22223333 12222333 383-468 1    
20030517 102.4 48 81 9.6 9 5-15 33323211 23323312 449-563      
20030516 102.6 74 97 10.5 9 7-19 32222233 32222322 504-656      
20030515 99.2 84 97 23.9 23 15-32 44444433 43435423 586-751      
20030514 96.3 90 75 28.1 27 15-42 55543443 55543343 630-776      
20030513 96.1 59 59 27.6 27 15-54 43454444 44453444 607-787      
20030512 93.9 83 66 19.5 18 14-26 34434333 44344333 584-760      
20030511 91.5 40 47 31.8 31 11-65 53655333 43554433 552-712      
20030510 92.7 24 22 44.3 43 8-87 66652333 56444333 505-769      
20030509 97.1 24 23 29.9 29 11-50 44555333 34555333 665-986 1    
20030508 100.9 61 33 31.8 30 16-42 55454453 54454453 639-786 5    
20030507 110.2 96 109 38.3 36 15-73 55654433 54654433 600-769 13    
20030506 122.0 114 117 23.4 23 12-37 43345444 33345434 566-780 7    
20030505 128.8 133 144 13.1 12 5-26 22122444 22222433 413-679 4    
20030504 142.0 175 172 7.8 7 5-11 32122222 22122222 350-449 9    
20030503 147.7 219 134 11.3 10 7-19 23332222 24342212 445-552 4    
20030502 143.0 181 175 17.4 17 9-46 35333223 36343312 480-611 5 1  
20030501 148.7 170 171 39.6 40 17-79 65554443 65543343 575-715 14    

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

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