Daily Sunspot Evaluation
Observation Sheet Monday, 1 October 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)
- 69
- Relative number (R)
- 159
- Observer
- HE
- Reading
- all checks consistent
- File
- 19901001.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 16 | 68W | 30 | 71W | 6 | 444 |
| 2 | BXO – 2 | 11 | 22W | 344 | 25W | 3 | 655 |
| 3 | AR – 1 | 33 | 64E | 258 | 61E | 1 | 456 |
| 4 | BXO – 2 | 20 | 73E | 249 | 70E | 4 | 457 |
| 5 | BXO – 3 | -15 | 66W | 28 | 69W | 5 | 451 |
| 6 | EKC – 23 | -8 | 35W | 357 | 38W | 11 | 467 |
| 7 | BXO – 2 | -13 | 19W | 341 | 22W | 3 | 450 |
| 8 | DSI – 27 | -4 | 07E | 315 | 04E | 8.5 | 452 |
| 9 | DAI – 6 | -16 | 40E | 282 | 37E | 7.5 | 454 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.