Daily Sunspot Evaluation
Observation Sheet Thursday, 20 October 1988
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)
- 7
- Number of spots (f)
- 50
- Relative number (R)
- 120
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19881020.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 9 | 23 | 52W | 38 | 55W | 9 | 277 |
| 2 | AX – 2 | 20 | 21W | 7 | 24W | 0.5 | 285 |
| 3 | AX – 2 | 29 | 36E | 310 | 33E | 0.5 | 281 |
| 4 | FKC – 33 | 22 | 52E | 294 | 49E | 17 | 282 |
| 5 | AX – 1 | -13 | 80W | 66 | 83W | 2 | 276 |
| 6 | BXO – 2 | -25 | 43W | 29 | 46W | 5 | 296 |
| 7 | HS – 1 | -37 | 22E | 324 | 19E | 2.5 | 283 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.