| 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 | |||
| 20110531 | 112.0 | 175 | 132 | 13.4 | 13 | 7-18 | 33332233 | 32443333 | 551-615 | 2 | ||
| 20110530 | 111.9 | 166 | 105 | 9.4 | 9 | 5-15 | 32132223 | 22242222 | 460-723 | 4 | ||
| 20110529 | 110.8 | 177 | 100 | 32.3 | 32 | 15-67 | 46543543 | 35543543 | 610-963 | 12 | 1 | |
| 20110528 | 100.5 | 182 | 91 | 39.6 | 40 | 6-94 | 43666224 | 43665224 | 444-682 | 18 | 1 | |
| 20110527 | 89.9 | 98 | 65 | 11.3 | 11 | 5-18 | 12223333 | 12222333 | 382-537 | 5 | ||
| 20110526 | 82.7 | 126 | 40 | 6.8 | 7 | 2-9 | 22102222 | 22212422 | 348-457 | |||
| 20110525 | 80.3 | 97 | 23 | 3.8 | 4 | 0-6 | 11101112 | 11111211 | 350-437 | 2 | ||
| 20110524 | 81.7 | 69 | 23 | 6.0 | 6 | 3-9 | 21112212 | 31122222 | 349-414 | |||
| 20110523 | 84.1 | 72 | 37 | 4.4 | 4 | 2-9 | 10012112 | 11011123 | 364-479 | |||
| 20110522 | 84.5 | 112 | 47 | 4.3 | 4 | 0-9 | 22001111 | 22112101 | 372-494 | |||
| 20110521 | 83.6 | 98 | 44 | 4.4 | 4 | 2-12 | 01101113 | 10211222 | 302-456 | |||
| 20110520 | 83.7 | 93 | 33 | 2.9 | 3 | 0-5 | 11000111 | 12011111 | 320-356 | |||
| 20110519 | 84.4 | 63 | 36 | 3.6 | 4 | 2-5 | 10111101 | 10122111 | 346-446 | |||
| 20110518 | 90.6 | 82 | 65 | 5.9 | 6 | 3-9 | 22111212 | 22212212 | 438-555 | 2 | ||
| 20110517 | 91.5 | 112 | 57 | 10.3 | 10 | 7-15 | 22332333 | 12322232 | 539-600 | |||
| 20110516 | 92.2 | 121 | 63 | 12.5 | 12 | 6-22 | 22334323 | 22333222 | 434-674 | |||
| 20110515 | 94.5 | 171 | 54 | 11.3 | 11 | 4-27 | 21123433 | 21223433 | 348-568 | 2 | ||
| 20110514 | 91.4 | 109 | 64 | 3.5 | 4 | 0-9 | 11000112 | 11001222 | 295-356 | |||
| 20110513 | 91.5 | 127 | 29 | 4.3 | 4 | 4-6 | 11112111 | 11112211 | 336-354 | |||
| 20110512 | 92.8 | 95 | 29 | 3.1 | 3 | 0-6 | 10101102 | 10111211 | 289-354 | 1 | ||
| 20110511 | 94.1 | 74 | 84 | 5.5 | 6 | 2-15 | 13101111 | 13111211 | 341-414 | |||
| 20110510 | 97.5 | 126 | 80 | 7.9 | 8 | 3-12 | 11223332 | 11223422 | 318-430 | |||
| 20110509 | 103.7 | 154 | 93 | 3.0 | 3 | 0-5 | 11001111 | 11011311 | 272-350 | 3 | ||
| 20110508 | 102.2 | 160 | 61 | 2.0 | 2 | 0-5 | 10001011 | 10010111 | 271-329 | |||
| 20110507 | 102.2 | 159 | 38 | 4.3 | 4 | 0-7 | 11102212 | 11112321 | 305-390 | |||
| 20110506 | 101.9 | 109 | 71 | 3.9 | 4 | 2-6 | 01111112 | 12211111 | 346-432 | |||
| 20110505 | 104.9 | 111 | 95 | 7.4 | 7 | 4-15 | 33211122 | 23312121 | 351-462 | |||
| 20110504 | 106.9 | 156 | 72 | 5.5 | 6 | 3-9 | 21211211 | 21221211 | 422-565 | |||
| 20110503 | 107.0 | 135 | 77 | 12.6 | 13 | 6-22 | 44222322 | 43232332 | 555-669 | 1 | ||
| 20110502 | 109.8 | 146 | 51 | 20.5 | 20 | 12-39 | 35433333 | 34433323 | 575-766 | 1 | ||
| 20110501 | 106.1 | 157 | 57 | 19.4 | 19 | 12-32 | 33334433 | 34344422 | 566-686 | 2 | ||
This page is normally updated once a day by Jan Alvestad. All values are preliminary.