Solar and geomagnetic data

Date Measured
solar flux
2.8 GHz
Sunspot number Planetary A index K indices
(3-hour intervals)
Solar wind
speed range
(km/s)
(SOHO)
Number
of flares
Magnetic
(SDO)
NOAA STAR
ap avg
Pots-
dam
WDC
Daily
ap range
Planetary
(WDC)
Boulder C M X
2K 1K
20150930 131.1 183 90 78 1.6 2 0-3 00011001 10012211 270-356 18 3  
20150929 129.2 193 92 125 4.8 5 0-12 23110001 22231121 322-361 17 11  
20150928 124.0 246 136 120 3.4 3 0-6 11001112 11002311 347-420 21 5  
20150927 127.5 296 178 154 3.3 3 2-5 11100011 11102222 380-455 16 2  
20150926 120.2 260 153 138 4.0 4 2-7 11000221 10000121 385-493 2    
20150925 119.8 260 163 145 6.5 6 2-15 22123101 22133111 447-535 1    
20150924 106.8 225 158 86 6.8 7 4-12 32211122 34212222 399-510 2    
20150923 107.9 164 113 95 12.3 12 5-22 12332431 12443541 452-587 7    
20150922 107.0 196 145 79 9.5 10 5-22 22423221 22423321 459-695      
20150921 103.4 178 112 68 8.1 8 4-18 33222211 33222312 446-672 4    
20150920 102.9 155 114 74 43.6 44 12-132 35754533 25554423 441-642 4 2  
20150919 105.7 105 73 61 15.9 16 2-39 44532013 34442222 366-449 3    
20150918 102.8 142 90 62 11.3 11 7-18 22333232 22344322 356-446 4    
20150917 106.8 134 95 72 10.1 10 2-32 42221103 43432213 381-534 15 1  
20150916 109.4 156 85 67 11.3 11 5-18 23212333 33322323 451-544 9    
20150915 101.0 133 86 66 16.6 17 9-27 43233323 54444423 440-556 6    
20150914 96.5 94 71 52 14.3 14 7-39 22222543 23333432 371-544      
20150913 98.8 152 104 75 10.8 11 4-22 11232433 11243332 428-476      
20150912 99.1 139 102 87 16.0 16 5-32 43443212 33542211 471-568      
20150911 92.8 161 128 79 60.4 60 15-132 34766734 26554533 381-666 1    
20150910 83.5 162 110 39 12.3 12 4-32 31212343 31212433 359-438      
20150909 82.3 95 73 49 59.0 59 27-80 46665565 ******** 364-454      
20150908 83.5 91 55 40 24.4 24 6-80 65312224 553130** 461-526      
20150907 83.7 124 64 47 44.0 44 9-94 23435666 24435554 440-574      
20150906 85.6 81 49 36 12.9 13 7-27 23333242 33334332 411-528      
20150905 85.4 82 38 24 11.8 12 6-22 22322442 13332332 407-466      
20150904 89.9 74 65 36 19.6 20 9-32 44433223 54634322 420-506      
20150903 86.5 97 50 27 7.8 8 4-18 23211223 14212313 351-446      
20150902 88.2 128 67 41 7.0 7 2-15 21102232 21112422 333-377      
20150901 89.0 100 79 49 4.4 4 3-6 21111112 22122222 313-370      
Average 101.7 153.5 97.9 72.4 15.78 15.77  
International sunspot number (SILSO-WDC): 78.1
K factor   0.51 0.80 1.08  

This page is normally updated once a day by Jan Alvestad. Solar wind speed is preliminary. Ap and Kp values in red are based on the definitive Potsdam WDC data. Flare enhanced and erroneous solar flux measurements are replaced by other same day measurements (QC).

[Solar Terrestrial Activity Report]