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
20180228 68.8 14 12 11 5.9 6 3-9 22112121 22122111 375-476      
20180227 67.9 15 12 15 18.3 18 4-56 45224211 36214211 383-561      
20180226 69.8 27 20 16 6.4 6 2-15 22221103 12322213 342-448      
20180225 67.2 14 11 0 3.3 3 0-7 10100221 10101212 350-452      
20180224 68.2 0 0 0 8.4 8 2-18 33321001 33322101 442-558      
20180223 67.6 0 0 0 14.6 15 5-32 24341233 14352222 444-567      
20180222 68.4 0 0 0 10.1 10 3-22 21122343 11122332 350-441      
20180221 67.6 33 0 0 2.4 2 0-7 00120010 00231121 324-431      
20180220 67.8 0 0 0 3.4 3 0-12 30001100 30022210 345-519      
20180219 69.1 0 0 0 15.9 16 6-27 44223243 54212232 507-608      
20180218 70.3 0 0 0 13.1 13 7-27 42223422 32323322 417-605      
20180217 69.0 34 11 0 11.4 11 4-22 34313212 24323212 396-555      
20180216 71.5 23 12 12 6.9 7 3-9 22211122 22311222 337-430      
20180215 72.5 16 15 15 11.3 11 0-39 10212533 10222422 270-399      
20180214 75.3 29 19 18 1.6 2 0-5 10000011 10001111 271-305      
20180213 75.9 52 24 20 2.1 2 0-3 01100001 01101111 285-306      
20180212 78.6 41 28 26 3.1 3 0-6 01200021 02210220 291-315 1    
20180211 78.2 54 27 24 1.8 2 0-3 10000100 30222302 298-324      
20180210 78.2 57 42 35 5.9 6 3-9 12122111 02242211 288-397 1    
20180209 78.1 37 27 23 3.9 4 0-12 13100002 13100111 295-342      
20180208 77.5 33 25 22 2.4 2 0-5 01110001 01110111 335-366      
20180207 76.6 34 24 20 2.1 2 0-6 00112000 01222110 351-401 2    
20180206 76.9 22 17 17 4.4 4 0-9 02121011 12222110 357-433 1    
20180205 74.0 29 15 13 7.8 8 2-15 32223210 32323231 351-386      
20180204 73.0 28 14 11 3.0 3 0-9 10000121 00111221 283-392 1    
20180203 69.2 36 22 0 3.4 3 2-6 00110021 00211111 283-309      
20180202 68.8 24 11 11 3.0 3 0-7 21111000 11212110 284-362      
20180201 69.0 25 0 0 3.8 4 2-12 30000011 20010111 348-405      
Average 72.0 24.1 13.9 11.0 6.40 6.32  
International sunspot number (SILSO-WDC): 10.6
K factor   0.44 0.76 0.96  

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]