Solar and geomagnetic data

Date Measured
solar flux
Sunspot number Planetary A index K indices
(3-hour intervals)
Solar wind
speed range
(km/s)
(SOHO)
Number
of flares
STAR SDO NOAA STAR
ap avg
WDC Daily
ap range
Planetary
(WDC)
Boulder C M X
2K 1K
20120331 110.1 165 86 96 4.1 4 2-9 00012220 01003320 326-368      
20120330 110.6 174 113 79 4.5 4 0-12 32111100 22212211 313-392 1    
20120329 111.5 175 121 100 2.8 3 0-9 00001112 00001212 315-368 5    
20120328 107.0 154 97 70 14.6 15 5-39 54322121 44332221 359-464 1    
20120327 105.6 174 118 63 16.6 17 6-48 23233334 12233324 315-407 2    
20120326 102.4 131 100 56 3.5 4 2-5 11111101 02111211 310-364 2    
20120325 101.3 111 91 84 3.6 4 0-6 21212100 21312211 352-420 2    
20120324 102.7 143 94 65 11.4 11 5-32 13432222 15522311 325-460 1    
20120323 104.8 175 135 74 5.0 5 0-15 31111210 31122311 327-382 1 1  
20120322 102.4 113 100 74 7.0 7 2-27 12000034 11001233 345-442 1    
20120321 99.9 133 90 62 5.1 5 3-9 11112122 10122221 350-403 4    
20120320 99.6 118 75 74 4.8 5 3-7 11111122 11212311 376-452 1    
20120319 101.8 118 104 58 9.6 10 5-22 24222123 24223222 446-553 2    
20120318 102.0 120 73 54 12.9 13 6-27 44222223 43332222 450-656 1    
20120317 102.4 121 82 89 26.5 26 12-48 44433445 43433333 576-697 1 1  
20120316 98.5 108 86 91 26.5 26 15-48 43343544 53433433 547-801 3    
20120315 110.6 151 93 85 35.6 36 7-94 43225655 33334644 444-760 2 1  
20120314 118.8 152 113 75 8.1 8 4-15 32112322 22222322 446-572 2 1  
20120313 126.5 138 98 80 9.5 10 5-22 43112222 34323232 486-761 3 1  
20120312 130.3 140 88 89 32.4 32 6-94 32266433 22267443 394-748 3    
20120311 131.2 168 113 103 9.6 10 4-18 22122333 22132322 358-472 4    
20120310 140.6 202 107 89 19.1 19 5-39 55332331 55333332 450-620 9 1  
20120309 145.5 217 107 96 87.0 87 9-207 56877632 55785532 525-986 10 1  
20120308 139.5 167 107 86 24.6 25 4-39 21255544 10155533 456-828 7    
20120307 135.7 178 125 102 48.3 48 22-80 45665554 35666533 344-578 4   2
20120306 138.1 193 107 109 9.4 9 3-15 32313223 22413322 336-386 12 7  
20120305 131.6 180 107 105 9.5 10 5-18 32221233 23331222 319-368 10 3 1
20120304 120.1 168 114 70 12.1 12 6-22 43322232 43322232 342-376 8 1  
20120303 111.5 88 53 52 7.5 8 3-12 22221312 24331212 349-386 6    
20120302 108.2 92 60 24 10.1 10 7-15 33323222 33313222 359-461   1  
20120301 103.4 68 39 24 17.1 17 2-27 03443344 04343233 399-518 1    
Average 114.7 146.3 96.6 76.7 16.08 16.13              
International sunspot number: 64.2
K factor   0.44 0.66 0.84                  

This page is normally updated once a day by Jan Alvestad. Solar wind speed is preliminary. The source for Ap and Kp was changed to Potsdam (WDC) on March 15. Flare enhanced and erroneous solar flux measurements are replaced by other same day measurements (QC).

[Solar Terrestrial Activity Report]