Daily Sunspot Evaluation
Observation Sheet Tuesday, 26 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)
- 5
- Number of spots (f)
- 50
- Relative number (R)
- 100
- Observer
- HM
- Reading
- all checks consistent
- File
- 19711026.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 13 | 12 | 22E | 129 | |||
| 2 | H – 1 | 12 | 72E | 79 | |||
| 3 | H – 5 | -5 | 19E | 132 | |||
| 4 | F – 20 | 8 | 59W | 210 | |||
| 5 | G – 11 | 18 | 39W | 190 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.