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
20130531 101.8 135 55 58 9.3 9 0-22 00011344 11012333 311-403 2 1  
20130530 104.1 133 86 71 1.5 2 0-3 00000100 10011211 327-452      
20130529 106.9 154 110 83 1.0 1 0-2 00000000 00011211 439-596 3    
20130528 104.8 147 114 75 7.1 7 0-15 33222210 34322211 580-889      
20130527 110.1 161 92 87 13.4 13 7-27 23223342 23233332 605-872      
20130526 120.0 169 104 92 18.1 18 6-27 44422442 44432323 546-907 3    
20130525 121.3 180 100 107 37.3 37 15-48 44344555 36434534 480-870 4    
20130524 127.3 204 128 99 20.5 20 7-67 23233264 23323354 422-580 3    
20130523 134.5 205 124 117 7.5 8 5-15 13122222 22122322 358-517 9    
20130522 133.4 222 123 107 9.8 10 6-15 32223232 32223322 444-477 7 1  
20130521 125.3 225 146 119 4.9 5 3-9 21211122 23322223 346-536 6    
20130520 132.0 213 149 113 6.1 6 2-9 21012222 31013223 350-426 11 1  
20130519 135.3 211 155 113 11.1 11 7-22 32222324 32323313 348-442 9    
20130518 132.1 226 140 146 18.8 19 6-56 45322232 45532322 358-459 6    
20130517 136.4 279 190 198 8.5 8 5-18 22112232 23222322 346-476 2 1  
20130516 144.7 348 184 212 16.1 16 6-27 34223423 33223423 347-552 4 1  
20130515 145.6 361 186 186 8.3 8 3-27 11224221 11233322 331-510 4   1
20130514 147.9 317 184 142 6.4 6 3-9 11222222 11243212 336-428 8   1
20130513 150.3 304 176 144 4.1 4 2-9 11111210 11112422 309-392 10 1 2
20130512 147.3 305 184 173 3.3 3 2-5 11110100 23111212 321-418 13 2  
20130511 136.6 248 141 145 2.6 3 0-5 01110010 01112111 349-501 9    
20130510 124.8 208 147 149 3.5 4 2-5 11111010 11222311 412-461 11 2  
20130509 128.4 182 128 154 3.3 3 0-5 11111100 21132211 446-532 8    
20130508 126.9 218 159 112 6.5 6 4-15 32211211 32221321 457-579 5    
20130507 128.7 238 152 118 8.8 9 3-18 33222221 33322221 470-567 4    
20130506 130.7 194 113 122 7.5 8 4-12 21322222 113322-- 411-601 6    
20130505 137.1 212 152 103 7.4 7 2-18 22212321 22212421 321-458 16 1  
20130504 141.6 231 143 156 4.8 5 2-6 21111212 11221312 346-408 10    
20130503 147.9 249 155 150 4.9 5 3-7 21111221 22211321 351-479 8 2  
20130502 149.4 205 110 102 10.9 11 4-22 44221132 44322322 428-551 7 1  
20130501 159.2 248 154 151 31.0 31 12-67 33545363 23454333 354-541 18    
Average 131.4 223.6 138.2 125.9 9.73 9.77  
International sunspot number: 78.7
K factor   0.35 0.57 0.63  

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, 2012. Values in red are based on the definitive WDC data. Flare enhanced and erroneous solar flux measurements are replaced by other same day measurements (QC).

[Solar Terrestrial Activity Report]