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
20170922 77.5 29 23 22 4.5 5 3-9 11111122 11301212 333-391      
20170921 73.0 50 33 22 4.9 5 2-9 11221012 11322211 352-459      
20170920 73.9 37 33 22 7.6 8 3-15 33222211 34332221 433-509      
20170919 70.6 75 45 11 6.4 6 3-12 21111232 21132222 453-559      
20170918 72.2 53 24 12 19.0 19 9-27 44443323 5564*033 514-717      
20170917 72.2 53 24 13 13.8 14 6-27 33224422 44334322 566-724      
20170916 72.1 30 26 13 27.1 27 12-56 55344433 55344323 568-753      
20170915 72.8 47 28 13 31.1 31 15-56 54434355 55544344 572-760      
20170914 74.2 28 14 11 20.8 21 4-67 22123644 22223543 346-718      
20170913 75.1 16 13 11 14.1 14 2-56 53321110 44432211 367-629      
20170912 75.5 28 25 11 16.4 16 6-56 22233245 31444334 438-650 2    
20170911 79.9 38 35 23 9.5 10 6-18 32222222 43322322 508-584      
20170910 92.7 84 59 38 4.0 4 0-15 00000223 11111423 452-603 6   1
20170909 107.2 114 92 49 3.4 3 0-9 22101000 32311220 460-702 11 4  
20170908 116.8 151 93 89 95.6 96 32-207 85458765 74447544 628-861 16 5  
20170907 128.5 200 132 94 34.3 34 6-154 34333247 24454326 446-806 19 4 1
20170906 127.3 191 126 79 7.3 7 5-18 11122213 12234314 349-621 9 6 2
20170905 120.5 183 126 122 9.5 10 5-22 43211221 33323331 444-599 15 5  
20170904 134.0 223 141 122 14.3 14 5-32 43221234 44222344 447-564 19 8  
20170903 120.2 222 137 96 8.5 8 4-12 33123212 33133222 455-565 3    
20170902 100.0 170 104 71 19.9 20 6-39 45432323 56543333 539-651 5    
20170901 93.4 104 61 62 14.0 14 6-22 33244223 43244323 514-741 3    
20170831 91.9 111 63 59 30.3 30 6-56 23555443 23455432 345-708      
20170830 86.9 83 62 42 3.1 3 0-7 22100010 22302221 344-421 5    
20170829 84.3 112 57 35 8.4 8 4-27 11111242 12222343 275-425 3    
20170828 81.6 65 48 17 2.5 2 0-3 11110101 11111201 278-358 1    
20170827 78.2 65 46 37 8.5 8 2-15 21021333 21132322 276-369 1    
20170826 77.5 72 45 35 3.1 3 2-5 00101111 11212221 315-366      
20170825 80.8 65 40 39 4.0 4 0-6 01112112 12212212 342-384 1    
20170824 78.8 85 58 43 9.6 10 2-22 34322200 44434211 350-469 2    
20170823 85.1 93 63 40 22.9 23 9-39 34324553 35435442 433-488 4    

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]