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
20211231 101.5 102.2 98.8 115 85 53 3.4 3 0-7 00101211 01111211 00000200 371-430 4    
20211230 102.4 110.3 106.7 140 69 77 7.5 8 2-15 32222110 32132221 20011121 391-465      
20211229 111.4 121.2 117.2 174 96 79 5.5 6 3-9 12111212 13122222 32112233 330-389 1    
20211228 120.5 123.9 119.8 207 114 107 7.3 7 2-12 23322210 13322211 53321313 328-452 6 2  
20211227 123.9 125.0 120.9 240 138 85 9.8 10 3-27 21224321 21234321 21123242 302-440 8    
20211226 125.4 130.1 125.9 271 189 95 2.8 3 0-6 10010011 01111221 10000032 301-376 8    
20211225 130.7 126.3 122.2 192 135 117 6.3 6 3-12 11223221 11232321 21113333 321-443 12    
20211224 126.2 129.7 125.5 276 169 145 4.6 5 3-9 11111122 01111221 10000135 358-455 13    
20211223 129.8 140.1 135.6 271 165 143 3.5 4 0-9 20011011 11111221 40000031 436-597 15    
20211222 140.4 137.1 132.7 255 164 137 9.5 10 7-15 22223232 12223220 32223345 507-641 12 1  
20211221 136.6 123.2 119.3 309 209 147 8.9 9 3-22 42212231 32222332 53212151 511-694 11 2  
20211220 122.7 116.6 112.9 239 175 115 13.4 13 7-22 43232323 43243323 44233335 402-682 15 1  
20211219 115.3 121.2 117.3 233 181 109 13.6 14 0-48 00012445 00012444 10001436 300-473 4    
20211218 121.3 120.2 116.4 273 185 117 2.9 3 0-6 00001121 00021211 10000042 306-364 2    
20211217 120.9 118.0 114.3 259 143 119 2.6 3 0-6 21100000 10101211 31000002 346-416 14 1  
20211216 117.9 102.8 99.6 251 165 127 7.4 7 4-15 22321122 12331221 33322333 392-547 9    
20211215 102.5 89.0 86.2 172 127 79 8.6 9 4-18 12232322 12232321 32132424 322-556 15    
20211214 88.9 81.3 78.8 127 93 40 4.3 4 3-5 11111111 22311221 12101333 289-322 8    
20211213 80.6 80.2 77.8 93 42 40 3.9 4 0-12 03220001 12321211 01110000 287-324      
20211212 79.9 76.2 73.8 76 48 12 2.5 2 0-5 11000110 02001221 11000132 282-316 1    
20211211 76.2 75.9 73.6 25 0 0 4.1 4 0-18 23100001 23101110 33100023 290-332      
20211210 75.7 77.3 75.0 22 22 0 2.6 3 0-6 00000112 01111211 00000003 278-326      
20211209 76.7     12 0 0 1.4 1 0-3 11000100 01002110 30000000 298-359      
20211208 76.9 79.3 77.0 26 11 0 3.6 4 2-6 11210101 11321110 10010013 355-491      
20211207 78.9 80.3 77.9 43 13 13 3.5 4 0-9 21000110 21001211 51000021 357-505      
20211206 80.0 83.1 80.7 42 14 14 6.4 6 3-12 21212322 21332321 40222343 426-476 2    
20211205 82.7 88.2 82.9 39 14 36 7.3 7 2-15 12011332 22122232 22011445 381-460 5 1  
20211204 88.1 85.3 82.9 70 49 35 6.6 7 3-15 32311121 32311121 53221133 409-512 11    
20211203 85.3 87.3 84.8 98 49 29 8.0 8 3-18 11022332 10123321 22124553 402-461      
20211202 86.6 86.1 83.7 121 83 45 9.0 9 5-15 22312322 11322322 51322354 435-531      
20211201 86.4 90.1 87.6 93 57 37 17.5 18 9-27 44323334 44433323 35324566 418-582      
Average 103.0 103.6 100.3 153.7 96.9 69.4 6.40 6.48
International sunspot number (SILSO-WDC): 67.6
K factor       0.44 0.70 0.97  

1) Data obtained courtesy of the Institute of Ionosphere, Kazakhstan
2) Solar wind speed is preliminary (* on days with none or 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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