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
(Tromsų)		 C M X
Measured
(20h UT)		 (02-11 UT) 2K 1K
  1AU
20230527 156.9     315 206 125 3.6 4 2-9 11110012 12122322 21111234 427-539 24    
20230526 149.0     281 180 127 5.1 5 3-7 22111112 22213221 55212224 432-588 17 1  
20230525 152.1     333 202 121 11.5 12 6-15 33332232 33332322 44344254 533-669 25 1  
20230524 164.1     322 213 153 10.3 10 5-15 23123233 23113423 44234354 508-631 24 3  
20230523 154.9     292 187 130 11.8 12 3-22 33321134 34221333 55322256 538-661 32 1  
20230522 161.5     278 183 97 21.3 21 9-39 53332344 54334433 66333465 535-667 19 1  
20230521 163.4     262 176 140 24.3 24 5-67 32123456 23223444 34235566 474-619 24 2  
20230520 169.6     305 174 138 35.3 35 15-80 65543333 45643433 66643444 386-652 27 10  
20230519 164.6     305 188 155 6.6 7 3-22 11111224 ******** 00101445 307-390 26 6  
20230518 150.6     248 181 121 2.1 2 0-3 11000010 1201121* 11011100 318-397 25 10  
20230517 137.9     203 127 106 3.0 3 2-4 11011110 11012323 31011111 372-396 19    
20230516 134.3     262 172 106 6.8 7 3-12 22311112 33312312 55112234 428-504 14 1  
20230515 134.5     234 159 103 4.6 5 2-12 10001132 10113332 20012252 454-511 6    
20230514 139.7     280 197 109 8.0 8 3-18 11112332 12112432 22113443 399-532 15    
20230513 143.8     321 212 120 11.1 11 3-27 22211244 22313434 31202265 410-570 18    
20230512 149.1     327 189 134 17.9 18 9-56 23325332 24434423 44335434 493-647 17    
20230511 163.4     318 227 152 8.0 8 5-12 33221122 23222323 44123234 478-675 20 2  
20230510 170.1     327 220 154 24.1 24 7-56 45345323 35334322 54244444 550-720 17 1  
20230509 173.4     370 249 151 12.1 12 4-32 43112224 34112314 55233436 385-716 13 7  
20230508 171.9     361 212 101 14.8 15 4-32 42114324 53313322 62225546 442-571 21 1  
20230507 157.2     315 204 99 9.6 10 4-27 12212423 13333423 33322422 401-511 10 2  
20230506 151.8 166.9 169.7 305 205 99 29.4 29 7-80 46354332 45533333 77445443 388-587 11    
20230505 161.9 177.2 180.2 250 160 90 3.1 3 2-6 21110011 22211211 52100234 325-408 10 2  
20230504 162.0 158.4 161.0 272 175 139 5.3 5 3-9 11211212 12221322 42111325 384-441 24 1  
20230503 156.2 153.3 155.7 245 167 143 2.8 3 0-7 00001112 00112322 11102215 423-485 22 6  
20230502 156.8 148.3 150.5 280 195 134 8.1 8 3-18 33231121 33332321 65432232 476-588 19    
20230501 147.9     306 197 87 9.1 9 5-18 31211233 21322323 32222345 487-579 24 2  
20230430 153.5 157.1 159.3 330 220 105 8.8 9 3-15 33312211 23422312 55413214 486-618 20 1  
20230429 155.8 148.2 150.3 302 161 82 19.6 20 9-27 33344432 43434422 56454554 607-752 15    
20230428 149.8 135.1 136.9 291 201 111 18.4 18 12-27 34333433 35333322 55424554 603-754 21    

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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