Daily Sunspot Evaluation
Observation Sheet Friday, 13 January 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)
- 3
- Number of spots (f)
- 26
- Relative number (R)
- 56
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | -23 | 55E | 2 | 53E | ||
| 2 | J – 2 | -27 | 22W | 79 | 24W | ||
| 3 | D – 22 | 18 | 10W | 67 | 12W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.