Daily Sunspot Evaluation
Observation Sheet Sunday, 24 January 1971
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)
- 8
- Number of spots (f)
- 52
- Relative number (R)
- 132
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19710124.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 13 | 13E | 170 | |||
| 2 | ? – 1 | -12 | 78E | 105 | |||
| 3 | E – 21 | -12 | 08W | 191 | |||
| 4 | A – 1 | -17 | 43W | 226 | |||
| 5 | A – 1 | 12 | 75W | 258 | |||
| 6 | E – 20 | 18 | 39W | 222 | |||
| 7 | J – 1 | 18 | 25W | 208 | |||
| 8 | C – 6 | 9 | 10W | 193 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.