| Date | Solar flux | Sunspot number | Planetary A index | K indices (3-hour intervals) |
Min-max solar wind speed (km/sec) | Number of flares (events) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STAR | SEC | STAR | SEC | Daily low - high | Planetary | Boulder | C | M | X | |||
| 20040430 | 89.5 | 50 | 46 | 13.3 | 12 | 5-25 | 23312334 | 33311244 | 370-463 | 1 | ||
| 20040429 | 88.5 | 46 | 25 | 5.6 | 4 | 4-7 | 12112212 | 12212202 | 406-535 | |||
| 20040428 | 89.5 | 27 | 30 | 9.3 | 8 | 2-21 | 10212342 | 10213433 | 408-615 | |||
| 20040427 | 95.1 | 34 | 28 | 6.0 | 5 | 3-9 | 11112222 | 12112221 | 389-490 | 1 | ||
| 20040426 | 99.6 | 50 | 47 | 7.6 | 7 | 4-11 | 21312222 | 21212321 | 437-530 | 1 | ||
| 20040425 | 107.1 | 48 | 45 | 12.6 | 12 | 5-21 | 13433322 | 13333332 | 463-582 | 5 | 1 | |
| 20040424 | 111.6 | 41 | 64 | 11.6 | 11 | 5-26 | 12343312 | 22333232 | 406-551 | 13 | ||
| 20040423 | 115.3 | 37 | 63 | 20.9 | 20 | 8-43 | 23445423 | 23444323 | 402-481 | 19 | 2 | |
| 20040422 | 117.1 | 62 | 90 | 5.0 | 4 | 2-9 | 00212211 | 11213332 | 363-431 | 2 | 1 | |
| 20040421 | 112.7 | 83 | 98 | 6.5 | 5 | 4-11 | 13122221 | 23223132 | 364-446 | 2 | ||
| 20040420 | 110.7 | 88 | 96 | 5.8 | 4 | 3-9 | 11122212 | 21223212 | 306-371 | |||
| 20040419 | 113.4 | 97 | 108 | 7.4 | 6 | 4-10 | 22222221 | 22222231 | 326-369 | 2 | ||
| 20040418 | 109.2 | 126 | 92 | 11.8 | 11 | 5-23 | 12423332 | 23423322 | 326-405 | |||
| 20040417 | 98.2 | 105 | 55 | 9.4 | 9 | 5-17 | 23212332 | 24212222 | 377-459 | 1 | ||
| 20040416 | 96.9 | 77 | 53 | 14.0 | 12 | 8-30 | 23432332 | 24432332 | 387-466 | |||
| 20040415 | 96.7 | 41 | 60 | 7.1 | 6 | 3-14 | 11112223 | 11121223 | 336-421 | 1 | ||
| 20040414 | 95.2 | 61 | 69 | 6.4 | 5 | 2-14 | 21103221 | 22201212 | 350-437 | |||
| 20040413 | 93.1 | 75 | 41 | 7.5 | 6 | 6-9 | 22222222 | 22223221 | 406-461 | |||
| 20040412 | 91.3 | 66 | 37 | 11.9 | 11 | 4-23 | 32432231 | 42422232 | 380-529 | 3 | ||
| 20040411 | 89.6 | 65 | 16 | 9.9 | 8 | 7-16 | 32322222 | 32312323 | 386-464 | 3 | ||
| 20040410 | 87.7 | 26 | 20 | 11.6 | 10 | 7-16 | 33322233 | 33322233 | 385-545 | |||
| 20040409 | 90.0 | 25 | 18 | 16.9 | 16 | 7-46 | 35432222 | 35432232 | 414-546 | 1 | ||
| 20040408 | 93.5 | 29 | 33 | 17.9 | 16 | 9-35 | 24443322 | 24452322 | 427-474 | 3 | ||
| 20040407 | 98.1 | 56 | 57 | 10.4 | 10 | 6-17 | 33322223 | 33322333 | 444-578 | |||
| 20040406 | 101.4 | 81 | 66 | 22.0 | 21 | 7-35 | 44444232 | 54443333 | 451-633 | 1 | 1 | |
| 20040405 | 108.7 | 113 | 85 | 14.5 | 14 | 2-41 | 10013454 | 23323554 | 359-464 | 1 | ||
| 20040404 | 108.9 | 101 | 69 | 13.0 | 12 | 3-49 | 53212213 | 63312323 | 382-525 | 1 | ||
| 20040403 | 107.4 | 80 | 68 | 24.6 | 23 | 9-41 | 23434455 | 33334545 | 333-518 | |||
| 20040402 | 108.1 | 69 | 99 | 3.4 | 3 | 1-6 | 10011211 | 21112211 | 348-428 | |||
| 20040401 | 112.8 | 74 | 100 | 4.1 | 3 | 1-7 | 00112121 | 10123311 | 388-463 | 1 | ||
This page is normally updated once a day by Jan Alvestad. All values are preliminary.