Daily Sunspot Evaluation
Observation Sheet Friday, 10 February 1978
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)
- 78
- Relative number (R)
- 138
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 40 | 16 | 16E | 31 | 16E | ||
| 2 | J – 1 | -23 | 60E | 347 | 60E | ||
| 3 | B – 4 | -29 | 46E | 1 | 46E | ||
| 4 | J – 2 | -31 | 37W | 84 | 37W | ||
| 5 | D – 14 | 18 | 30W | 77 | 30W | ||
| 6 | D – 17 | 25 | 30W | 77 | 30W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.