| Date | Solar flux | SEC sunspot number | Planetary A index (daily value and low/high values) |
K indices (3-hour intervals) | Min-max solar wind speed (km/sec) | Number of flares | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Planetary | Boulder | C | M | X | ||||||
| 991027 | 197.3 | 193 | 17 | 7-31 | 23344432 | 24343322 | 373-436 | 3 | 3 | |
| 991026 | 189.4 | 200 | 9 | 3-14 | 13233322 | 13233331 | 401-577 | 12 | 3 | |
| 991025 | 179.2 | 169 | 18 | 4-31 | 33444331 | 33444322 | 517-608 | 8 | 1 | |
| 991024 | 158.8 | 130 | 23 | 11-41 | 44544334 | 34543323 | 525-634 | 5 | ||
| 991023 | 164.5 | 114 | 26 | 11-50 | 34435543 | 24424433 | 555-703 | 9 | ||
| 991022 | 160.3 | 153 | 87 | 19-235 | 78864443 | 66754433 | 466-714 | 4 | ||
| 991021 | 158.5 | 154 | 15 | 6-32 | 34222334 | 34222334 | 352-527 | 11 | ||
| 991020 | 158.8 | 193 | 4 | 2-7 | 01112221 | 02112211 | 339-393 | 2 | 1 | |
| 991019 | 169.6 | 169 | 7 | 3-20 | 22411221 | 22322221 | 356-398 | 15 | ||
| 991018 | 172.7 | 135 | 6 | 3-12 | 11113322 | 02023322 | 393-491 | 8 | ||
| 991017 | 178.0 | 169 | 26 | 5-54 | 43555312 | 33455421 | 470-594 | 9 | ||
| 991016 | 189.0 | 189 | 21 | 15-33 | 44334433 | 45334423 | 578-738 | 6 | ||
| 991015 | 198.2 | 130 | 24 | 12-?? | 44544433 | 55443332 | 648-737 | 11 | ||
| 991014 | 199.8 | 206 | 24 | 16-38 | 34444534 | 34444323 | 595-706 | 6 | 1 | |
| 991013 | 191.0 | 210 | 26 | 15-47 | 43544333 | 43533343 | 521-667 | 6 | ||
| 991012 | 184 | 191 | 34 | 45465444 | 55353333 | 536-654 | 3 | |||
| 991011 | 166.6 | 163 | 23 | 42444434 | 42444324 | 501-695 | 3 | |||
| 991010 | 160.5 | 195 | 28 | 34555543 | 23444542 | 439-641 | 4 | |||
| 991009 | 152.8 | 235 | 6 | 01212233 | 11212212 | 381-452 | 2 | |||
| 991008 | 151.2 | 170 | 8 | 4-14 | 23233121 | 23122112 | 382-460 | 5 | ||
| 991007 | 129.4 | 184 | 6 | 4-9 | 22212221 | 23320112 | 357-473 | 4 | ||
| 991006 | 133.6 | 176 | 6 | 3-13 | 11332221 | 11332212 | 451-567 | 4 | ||
| 991005 | 146.2 | 160 | 16 | 33334334 | 32323424 | 432-588 | 2 | |||
| 991004 | 144.4 | 148 | 15 | 5-19 | 13333333 | 23342333 | 398-509 | 2 | ||
| 991003 | 134.5 | 117 | 10 | 5-14 | 21333322 | 11332312 | 381-440 | 3 | ||
| 991002 | 126.3 | 47 | 15 | 9-29 | 34433322 | 24432222 | 387-464 | 9 | ||
| 991001 | 121.6 | 67 | 11 | 9-15 | 23233331 | 33232221 | 440-506 | 13 | ||
| 990930 | 124.8 | 84 | 29 | 8-94 | 46444332 | 55353222 | 492-607 | 1 | ||
| 990929 | 124.8 | 84 | 19 | 10-48 | 43453233 | 44543313 | 497-595 | 1 | ||
| 990928 | 126.0 | 52 | 20 | 12-30 | 44444334 | 44443323 | 525-656 | 2 | ||
This page is normally updated once a day by Jan Alvestad. Values for the most recent day in the table are preliminary.