Daily Sunspot Evaluation
Observation Sheet Sunday, 3 October 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)
- 4
- Number of spots (f)
- 59
- Relative number (R)
- 99
- Observer
- HA
- Reading
- all checks consistent
- File
- 19711003.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 42 | 12 | 17E | 78 | |||
| 2 | D – 14 | -5 | 25W | 120 | |||
| 3 | A – 2 | -7 | 33W | 128 | |||
| 4 | H – 1 | -6 | 38W | 133 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.