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
20160501 92.2 114 95 76 14.4 14 6-27 22223344 23323443 353-512 2    
20160430 94.0 135 106 82 5.5 6 2-12 01111123 12223323 333-437 1    
20160429 92.4 148 113 82 2.0 2 0-4 11000011 01011221 331-427      
20160428 94.9 141 99 84 3.4 3 2-6 21111000 21222321 368-459 4    
20160427 92.6 126 100 86 7.8 8 4-12 12223322 12323322 428-502      
20160426 85.6 108 96 65 4.9 5 3-9 11111122 11112223 419-506      
20160425 81.9 80 64 37 4.5 4 2-6 11221110 12232211 452-550      
20160424 81.8 94 85 46 10.6 11 4-27 11213431 21222432 469-574      
20160423 78.7 66 60 11 10.0 10 4-32 12122134 12122235 385-530      
20160422 76.6 53 37 22 10.9 11 4-27 21113423 22323434 403-621      
20160421 76.8 40 24 24 4.1 4 2-5 01111111 12222312 347-479      
20160420 83.2 48 44 24 3.5 4 2-6 01121001 02331311 305-384      
20160419 89.1 76 39 28 1.5 2 0-3 00001001 00111211 346-437 1    
20160418 94.6 65 42 28 4.1 4 0-9 21110011 32221211 346-440   1  
20160417 102.1 57 43 35 16.8 17 7-27 44322234 45324432 349-535 2    
20160416 109.5 81 58 51 9.6 10 3-18 11222333 00342423 346-465 3    
20160415 112.4 101 53 69 7.8 8 2-27 42011212 32112312 350-427 1    
20160414 111.1 147 85 46 22.0 22 9-39 33244533 33345322 372-517 2    
20160413 108.2 124 78 41 25.4 25 12-48 54444433 43544332 453-663 1    
20160412 111.3 76 62 34 18.4 18 5-48 33123345 23222234 346-555 1    
20160411 116.6 80 43 42 4.3 4 0-15 00012321 10112322 344-427 4    
20160410 110.6 72 47 26 6.1 6 3-12 12321112 03422212 335-427 6    
20160409 105.5 60 43 29 1.6 2 0-4 00001100 00011211 324-359 10    
20160408 98.3 43 26 27 8.4 8 2-39 53110010 42211211 336-413 1    
20160407 92.3 58 36 26 17.3 17 3-67 21111256 11012334 345-379 3    
20160406 87.1 37 30 13 5.8 6 3-9 21122211 21232211 350-458 2    
20160405 83.4 83 56 25 5.3 5 2-12 11012131 01212222 348-441      
20160404 83.4 75 52 23 5.9 6 2-12 33112001 22222210 349-438      
20160403 82.3 71 57 38 14.3 14 3-32 43331224 44341213 349-468      
20160402 81.5 25 12 11 18.9 19 0-48 20003545 10012544 308-538      

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]