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
20180430 70.2 0 0 0 4.8 5 0-9 21112210 22222411 336-459  
   
20180429 71.1 11 0 0 3.0 3 0-5 00111101 10112322 330-351  
   
20180428 70.2 36 23 0 3.0 3 0-6 21101100 21212311 346-380  
   
20180427 68.7 18 0 11 4.8 5 0-12 10011322 10112423 328-379  
   
20180426 69.4 25 16 14 3.8 4 2-6 21011012 21112112 322-353  
   
20180425 70.7
27 17 17 3.5 4 0-7 22110001 22221101 291-355  
   
20180424 72.9
48
22
19 3.8 4 0-7 00101122 10212212 328-352  
   
20180423 73.9
41
19
22
6.1 6 0-15 32001132 22101111 350-444  
   
20180422 75.7 38 31 20 4.6 5 2-6 12102112 23112212 402-552      
20180421 76.8
37
30
34
11.6 12 5-18 33322313 33333321 530-650  
   
20180420 73.0
60
32
14
43.3 43 18-80 34664553 34654443 320-699  
   
20180419 70.8
16
14
14
1.5 2 0-4 00010011 11011210 270-361  
   
20180418 70.8
36
23
0
4.9 5 3-7 12112211 13112311 271-354  
   
20180417 69.3
12
11
0
2.6 3 0-4 11100111 01101211 270-395  
   
20180416 69.2
12
11
0
2.1 2 0-4 11000001 11111210 270-363  
   
20180415 70.6
39
25
0
5.0 5 3-9 21112112 22222211 271-362  
   
20180414 69.5
40
22
11
4.9 5 0-7 21002212 11112422 342-466  
   
20180413 69.7
31
14
14
8.5 8 3-22 42211123 32311223 406-520  
   
20180412 70.0
31
16
13
8.8 9 5-15 22312233 22412222 461-548  
   
20180411 68.3 11
0
0
11.9 12 3-32 44321112 43432212 472-580  
   
20180410 68.5 0
0
0
17.1 17 7-27 24433324 24433323 467-579  
   
20180409 68.7 45
11
0
10.6 11 5-32 11212234 22323324 336-515  
   
20180408 67.9 11
0
0
4.6 5 2-9 11010222 12111222 344-361  
   
20180407 66.8 0
0
0
3.8 4 2-7 01101112 02212212 337-359  
   
20180406 67.3 0
0
0
3.4 3 2-6 10011211 12112211 345-451  
   
20180405 66.4 34
0
0
8.1 8 3-15 32111331 22112332 343-445  
   
20180404 68.5 0
0
0
3.9 4 0-6 00022212 00123322 319-348  
   
20180403 67.8 0
0
0
2.3 2 0-7 12100000 12201211 334-416  
   
20180402 68.4 0
0
0
4.5 4 3-6 21111111 21112311 369-449  
   
20180401 69.0 0
0
0
4.4 4 4-5 11111111 11212211 379-461  
   
Average 70.0 22.0 11.2 6.8
6.80 6.87
International sunspot number (SILSO-WDC): 8.9
K factor   0.40 0.79 1.31  

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).

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