Solar and geomagnetic data

Date Solar flux density
2.8 GHz
Sunspot number Planetary A index
(3)
K indices
(3-hour intervals) (3)
Solar wind
speed range
(km/s)
(SOHO)(2)
Number
of flares
DRAO (4) Almaty (1)
(averages)
STAR
(SDO)
NOAA STAR
ap avg
Pots-
dam
WDC
Daily
ap range
Planetary
(WDC)
Boulder Andenes C M X
Measured (20h UT) (02-11 UT) 2K 1K
  1AU
20210611 77.3 73.1 75.3 67 28 13 8.1 8 5-12 23222112 22332312 44344444 294-365      
20210610 73.3 79.0 81.5 64 33 29 3.6 4 2-6 10001212 11012322 11001214 283-351 1    
20210609 78.6 80.0 82.5 66 45 27 2.8 3 0-5 11100000 12112211 31100110 311-373 3    
20210608 79.9     84 70 34 4.6 5 2-7 22210011 22211311 42210223 361-497 3    
20210607 80.8     89 64 53 11.1 11 3-22 12223334 22322334 01123354 296-457      
20210606 77.4     149 101 42 4.0 4 0-9 21100112 12211222 33000001 278-337      
20210605 74.4     119 70 30 3.6 4 2-6 01111012 12112212 20101114 290-405      
20210604 77.1     82 55 30 4.0 4 3-5 11111111 22122412 12112113 286-403      
20210603 75.5 74.0 76.2 102 74 28 5.4 5 0-12 22321110 23332210 10123310 280-323      
20210602 76.3 74.0 76.1 77 59 30 4.5 4 0-15 01003211 01113222 00003132 285-314      
20210601 75.2 80.0 82.3 54 34 20 1.8 2 0-4 10000000 20011211 11000000 275-321 1    
20210531 81.7 73.0 75.1 78 67 31 2.0 2 0-3 11100100 11111201 30001100 286-354      
20210530 74.4 74.0 76.0 46 37 27 4.8 5 3-9 11111112 21122223 00211113 350-434      
20210529 76.0 77.0 79.1 61 51 26 5.0 5 0-9 01122122 01122222 00133221 340-431 3    
20210528 77.4 82.1 84.3 77 38 28 1.8 2 0-3 01001000 11012211 12001100 347-446 2    
20210527 83.3 84.9 87.1 52 34 34 14.5 14 4-32 43432221 ******** 55333332 350-441 3    
20210526 88.0 83.0 85.2 108 66 34 12.0 12 3-39 11113353 0******* 30002236 287-414 7    
20210525 83.5 73.0 74.9 108 71 36 2.5 2 0-5 00001101 01012312 00011104 281-325      
20210524 72.7 78.0 80.0 81 67 29 2.0 2 0-5 10010000 20021101 31101000 307-358      
20210523 79.0 75.0 76.9 72 52 30 3.3 3 2-5 01111011 02121312 11110023 342-383 4 1  
20210522 75.6 74.0 75.9 65 49 19 4.3 4 3-7 11111121 11212222 40012243 371-448 9 2  
20210521 73.7 72.0 73.8 84 40 13 5.4 5 3-9 22221111 2232**** 64222322 435-569 1    
20210520 72.3 75.0 76.9 72 28 13 23.5 24 7-56 32245443 32344333 54166555 327-564      
20210519 75.9 75.1 76.9 42 27 24 4.8 5 3-9 21111113 21211212 20211035 304-410      
20210518 76.4 75.0 76.8 65 51 24 8.9 9 2-22 34322110 34432122 66223201 319-409 1    
20210517 74.8 72.1 73.7 52 36 11 5.1 5 3-7 11111222 22312322 21212243 320-400      
20210516 73.2 72.0 73.7 44 25 11 3.5 4 0-6 10111121 10122221 21011232 302-381      
20210515 73.3 71.1 72.6 63 59 24 6.8 7 3-18 31221111 32322211 51222223 372-424      
20210514 70.9 74.0 75.6 67 45 24 3.3 3 0-7 01100112 11100213 20001143 348-421      
20210513 74.7 74.1 75.7 50 41 24 5.9 6 4-7 22212112 33322222 45212234 348-506      
20210512 74.7     53 34 31 41.5 42 4-132 11447723 10436522 20346435 285-497 1    

1) Data obtained courtesy of the Institute of Ionosphere, Kazakhstan
2)
Solar wind speed is preliminary (* on days with too few measurements from SOHO-CELIAS/MTOF PM, measurements from DSCOVR are used)
3) Ap and Kp values in red are based on the definitive Potsdam WDC data.
4) Flare enhanced measurements and measurements that most likely are invalid are replaced by other same day measurements ## (continuous QC process). Solar flux measurements that may be invalid are temporarily marked ** , while interpolated values are marked # .

This page is normally updated once a day by Jan Alvestad.

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