Daily Sunspot Evaluation
Observation Sheet Sunday, 24 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)
- 57
- Relative number (R)
- 97
- Observer
- HM
- Reading
- all checks consistent
- File
- 19711024.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 13 | 50E | 128 | |||
| 2 | H – 1 | -5 | 45E | 133 | |||
| 3 | F – 35 | 8 | 33W | 211 | |||
| 4 | E – 14 | 18 | 11W | 189 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.