Daily Sunspot Evaluation
Observation Sheet Friday, 18 November 1977
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)
- 6
- Number of spots (f)
- 26
- Relative number (R)
- 86
- Observer
- FA
- Reading
- all checks consistent
- File
- 19771118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 13 | 23 | 12E | 64 | 10E | ||
| 2 | A – 1 | 15 | 44E | 32 | 42E | ||
| 3 | A – 2 | -26 | 39E | 37 | 37E | ||
| 4 | A – 1 | -18 | 25E | 51 | 22E | ||
| 5 | B – 5 | -26 | 69W | 143 | 69W | ||
| 6 | J – 4 | 38 | 02W | 78 | 04W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.