Daily Sunspot Evaluation
Observation Sheet Tuesday, 26 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
- FA
- Reading
- all checks consistent
- File
- 19710126.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 6 | 88E | 68 | |||
| 2 | E – 13 | -13 | 56E | 100 | |||
| 3 | A – 2 | -13 | 25W | 181 | |||
| 4 | E – 22 | -13 | 36W | 192 | |||
| 5 | E – 9 | 18 | 68W | 224 | |||
| 6 | J – 2 | 8 | 39W | 195 | |||
| 7 | J – 1 | 18 | 52W | 208 | |||
| 8 | J – 2 | 12 | 14W | 170 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.