Daily Sunspot Evaluation
Observation Sheet Sunday, 23 January 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)
- 4
- Number of spots (f)
- 17
- Relative number (R)
- 57
- Observer
- FA
- Reading
- all checks consistent
- File
- 19770123.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 31 | 45E | 19 | 45E | ||
| 2 | J – 2 | 25 | 57E | 5 | 57E | ||
| 3 | A – 3 | -27 | 20E | 42 | 20E | ||
| 4 | H – 10 | 26 | 23W | 85 | 23W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.