Daily Sunspot Evaluation
Observation Sheet Saturday, 2 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)
- 6
- Number of spots (f)
- 46
- Relative number (R)
- 106
- Observer
- HM
- Reading
- all checks consistent
- File
- 19711002.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 20 | 07E | 101 | |||
| 2 | B – 5 | 17 | 35E | 73 | |||
| 3 | C – 20 | 11 | 31E | 77 | |||
| 4 | A – 1 | -14 | 35E | 73 | |||
| 5 | D – 12 | -5 | 10W | 118 | |||
| 6 | H – 7 | -6 | 23W | 131 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.