Daily Sunspot Evaluation
Observation Sheet Monday, 24 September 1990
There is no typed record for this day. The values below were read by computer from the table on the sheet; when in doubt, see the drawing. Details →
- Number of groups (g)
- 9
- Number of spots (f)
- 31
- Relative number (R)
- 121
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900924.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 19 | 65W | 119 | 68W | 1.5 | 431 |
| 2 | AX – 2 | 14 | 06W | 60 | 09W | 468 | |
| 3 | ESI – 7 | 13 | 29E | 25 | 26E | 13 | 444 |
| 4 | DAI – 3 | -13 | 49W | 103 | 52W | 4 | 436 |
| 5 | BRI – 8 | -8 | 24W | 78 | 27W | 6.5 | 441 |
| 6 | HS – 1 | -24 | 01E | 53 | 02W | 2 | 442 |
| 7 | AX – 1 | -32 | 57E | 357 | 54E | 445 | |
| 8 | EHC – 7 | -7 | 64E | 350 | 61E | 12 | 447 |
| 9 | HS – 1 | -12 | 73E | 341 | 70E | 2 | 450 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.