Daily Sunspot Evaluation
Observation Sheet Thursday, 4 November 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)
- 9
- Number of spots (f)
- 38
- Relative number (R)
- 128
- Observer
- SK
- Reading
- all checks consistent
- File
- 19711104.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 11 | 12E | 20 | |||
| 2 | C – 8 | 10 | 35E | 357 | |||
| 3 | H – 10 | -9 | 30E | 2 | |||
| 4 | J – 2 | -20 | 31E | 1 | |||
| 5 | A – 1 | -15 | 57W | 89 | |||
| 6 | J – 1 | -13 | 56W | 88 | |||
| 7 | D – 10 | -10 | 59W | 91 | |||
| 8 | H – 4 | 11 | 48W | 80 | |||
| 9 | A – 1 | 6 | 03W | 35 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.