| Date | Measured solar flux |
Sunspot number | Planetary A index | K indices (3-hour intervals) | Min-max solar wind speed (km/sec) | Number of flares (events) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STAR SDO | NOAA | STAR | NOAA | Daily ap range | Planetary | Boulder | C | M | X | |||
| 20110430 | 109.5 | 164 | 76 | 24.1 | 24 | 12-48 | 43354344 | 43444333 | 477-770 | 5 | ||
| 20110429 | 109.6 | 171 | 70 | 12.1 | 12 | 3-32 | 13112344 | 13111235 | 334-505 | 3 | ||
| 20110428 | 110.4 | 179 | 71 | 3.1 | 3 | 0-7 | 00011221 | 00001111 | 326-381 | 3 | ||
| 20110427 | 107.9 | 151 | 39 | 2.8 | 3 | 0-5 | 00001111 | 10011011 | 352-429 | 1 | ||
| 20110426 | 109.4 | 170 | 57 | 2.9 | 3 | 0-4 | 00101111 | 10111211 | 376-463 | |||
| 20110425 | 112.1 | 160 | 67 | 5.6 | 6 | 2-12 | 23101221 | 23112211 | 453-592 | |||
| 20110424 | 117.2 | 181 | 78 | 5.8 | 6 | 0-18 | 11011213 | 12111223 | 370-542 | 2 | ||
| 20110423 | 119.1 | 144 | 80 | 5.6 | 6 | 2-15 | 21031211 | 21141211 | 346-450 | 6 | ||
| 20110422 | 114.8 | 163 | 103 | 6.5 | 6 | 2-12 | 32022221 | 21122221 | 378-462 | 14 | 2 | |
| 20110421 | 113.0 | 152 | 100 | 4.8 | 5 | 3-7 | 12111212 | 12111222 | 407-457 | 4 | ||
| 20110420 | 117.0 | 158 | 90 | 16.3 | 16 | 4-39 | 35433321 | 33433311 | 424-543 | 3 | ||
| 20110419 | 110.9 | 183 | 76 | 5.6 | 6 | 3-12 | 12112213 | 12112213 | 346-426 | 1 | ||
| 20110418 | 111.0 | 149 | 67 | 9.6 | 10 | 2-27 | 10334211 | 11333321 | 311-433 | 4 | ||
| 20110417 | 114.4 | 173 | 67 | 4.8 | 5 | 2-6 | 01112222 | 11112211 | 310-323 | 2 | ||
| 20110416 | 119.2 | 182 | 97 | 3.9 | 4 | 2-5 | 01011111 | 12111112 | 312-380 | 11 | ||
| 20110415 | 129.4 | 254 | 124 | 6.0 | 6 | 2-9 | 22012221 | 22112212 | 346-406 | 10 | 1 | |
| 20110414 | 118.7 | 222 | 131 | 7.1 | 7 | 4-12 | 12211313 | 12211103 | 390-512 | 11 | ||
| 20110413 | 117.8 | 241 | 153 | 14.0 | 14 | 5-22 | 43432321 | 43433211 | 470-611 | 8 | ||
| 20110412 | 110.3 | 150 | 114 | 23.3 | 23 | 6-48 | 22545423 | 22444412 | 437-652 | 3 | ||
| 20110411 | 105.8 | 127 | 80 | 9.3 | 9 | 0-22 | 20123432 | 21223322 | 308-464 | 3 | ||
| 20110410 | 104.8 | 115 | 56 | 5.3 | 5 | 0-15 | 20001322 | 20011111 | 357-386 | |||
| 20110409 | 105.0 | 175 | 84 | 9.6 | 10 | 4-18 | 33312311 | 33312211 | 372-455 | 1 | ||
| 20110408 | 108.7 | 186 | 97 | 7.6 | 8 | 0-15 | 20113233 | 21112333 | 384-453 | |||
| 20110407 | 112.3 | 191 | 73 | 5.9 | 6 | 3-12 | 32111211 | 32111211 | 463-588 | 3 | ||
| 20110406 | 117.1 | 184 | 56 | 25.5 | 26 | 4-80 | 33146533 | 23245433 | 473-578 | 3 | ||
| 20110405 | 109.2 | 170 | 60 | 6.6 | 7 | 3-15 | 21121223 | 22220012 | 434-592 | |||
| 20110404 | 112.7 | 153 | 83 | 8.3 | 8 | 5-18 | 32212211 | 33222101 | 465-584 | |||
| 20110403 | 114.0 | 112 | 70 | 16.4 | 16 | 12-22 | 43333343 | 34333333 | 514-714 | 1 | ||
| 20110402 | 107.5 | 141 | 66 | 20.1 | 20 | 12-32 | 43343334 | 43443234 | 349-706 | |||
| 20110401 | 108.9 | 171 | 62 | 13.1 | 13 | 3-32 | 11123443 | 11123443 | 290-494 | 2 | ||
This page is normally updated once a day by Jan Alvestad. All values are preliminary.