Daily Sunspot Evaluation
Observation Sheet Thursday, 12 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)
- 24
- Relative number (R)
- 54
- Observer
- GA
- Reading
- all checks consistent
- File
- 19780112.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 19 | 19 | 04E | 69 | 02E | ||
| 2 | A? – 1 | 16 | 76E | 355 | 74E | ||
| 3 | B? – 4 | -23 | 69E | 4 | 65E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.