Daily Sunspot Evaluation
Observation Sheet Friday, 18 November 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)
- 10
- Number of spots (f)
- 78
- Relative number (R)
- 178
- Observer
- HE
- Reading
- all checks consistent
- File
- 19881118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 22 | 68W | 30 | 69W | 9.0 | 715 |
| 2 | BKO – 2 | 17 | 65W | 27 | 66W | 9.5 | 316 |
| 3 | HS – 1 | 8 | 42W | 4 | 43W | 1.5 | 709 |
| 4 | FKC – 28 | 31 | 40W | 2 | 41W | 22.5 | 305 |
| 5 | HA – 2 | 14 | 10W | 332 | 11W | 1.0 | 711 |
| 6 | DAO – 23 | 22 | 12E | 310 | HE | 10.5 | 312 |
| 7 | DAO – 7 | 29 | 29E | 293 | 28E | 11.0 | 311 |
| 8 | ? – 1 | -29 | 80W | 42 | 81W | - | 712 |
| 9 | ? – 4 | -39 | 70W | 32 | 71W | 10.0 | 313 |
| 10 | CSO – 5 | -18 | 32W | 354 | 33W | 4.5 | 30 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.