Daily Sunspot Evaluation
Observation Sheet Tuesday, 5 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)
- 39
- Relative number (R)
- 99
- Observer
- HM
- Reading
- all checks consistent
- File
- 19711005.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 21 | 48E | 20 | |||
| 2 | A – 7 | -3 | 05W | 73 | |||
| 3 | H – 1 | -7 | 66W | 134 | |||
| 4 | A – 3 | -4 | 49W | 117 | |||
| 5 | C – 20 | 11 | 09W | 77 | |||
| 6 | A – 7 | 13 | 32W | 100 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.