Daily Sunspot Evaluation
Observation Sheet Friday, 7 October 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)
- 5
- Number of spots (f)
- 22
- Relative number (R)
- 72
- Observer
- GA
- Reading
- all checks consistent
- File
- 19771007.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 13 | 8 | 66E | 204 | 63E | ||
| 2 | J – 2 | -23 | 36W | 306 | 38W | ||
| 3 | ? – 2 | 13 | 79W | 349 | 82W | ||
| 4 | J – 1 | 19 | 30W | 300 | 33W | ||
| 5 | D – 4 | 28 | 69W | 339 | 72W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.