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
20150829 100.1 139 100 50 11.8 12 6-27 43232322 42242422 403-454 5    
20150828 109.1 142 100 50 38.9 39 15-67 54335564 44335554 313-433 16 2  
20150827 110.2 121 75 46 48.0 48 18-94 56543546 47544424 304-404 10 1  
20150826 118.7 121 67 45 25.1 25 15-32 33344444 33355333 350-424 15    
20150825 121.2 147 74 61 7.5 8 4-12 22222123 33432322 353-429 13    
20150824 127.7 157 101 71 6.0 6 3-12 32222111 43332211 389-470 17 2  
20150823 117.2 200 107 93 25.1 25 9-48 33554242 42554332 346-563 12    
20150822 116.9 140 100 72 7.4 7 3-15 21123222 22233222 345-408 16 3  
20150821 111.0 133 83 78 4.9 5 3-7 11212111 12312321 398-481 7 3  
20150820 102.8 120 86 68 10.9 11 6-18 23233223 33225332 420-547 7    
20150819 98.2 103 74 36 16.8 17 7-22 44434322 43434322 395-523      
20150818 88.7 76 59 44 6.5 6 3-12 32211112 33322212 369-548      
20150817 87.0 74 47 20 21.0 21 12-27 34444343 45544322 468-567      
20150816 85.6 72 58 32 30.9 31 12-67 54643433 55633333 439-578      
20150815 89.4 83 53 33 38.8 39 6-94 22366534 22465533 332-507 1    
20150814 93.2 104 64 46 2.3 2 0-4 00011111 00112312 289-380 4    
20150813 94.8 129 85 51 10.3 10 4-32 34222111 34322211 322-360      
20150812 99.2 135 83 68 10.5 10 4-18 22312333 23313323 348-442      
20150811 102.8 99 79 87 6.9 7 3-12 32221112 33333212 355-451 1    
20150810 106.2 106 86 67 8.3 8 5-12 33222221 34432222 390-549      
20150809 114.5 123 71 87 9.9 10 6-18 12232223 23342233 449-553 1    
20150808 121.0 128 98 92 10.4 10 6-15 22333233 23333233 448-529 4    
20150807 122.1 190 144 95 18.3 18 6-48 32425421 32544421 439-579 10    
20150806 116.9 228 130 79 10.4 10 4-18 21233223 31353223 349-602 4    
20150805 112.2 153 87 87 4.6 5 2-9 11011112 21122322 346-432      
20150804 106.8 157 96 68 6.0 6 4-12 22111113 13212322 382-458      
20150803 105.6 215 161 62 6.1 6 4-12 23212111 23322211 440-547      
20150802 101.5 145 102 51 10.0 10 5-18 32213312 43323322 471-589      
20150801 102.9 177 99 70 8.6 9 5-15 32122322 42212322 477-575 1    
20150731 100.7 151 99 71 13.3 13 5-22 32123433 33223433 359-578      
20150730 102.0 191 131 83 11.5 12 4-32 22112343 12122333 326-410      

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]