Daily Sunspot Evaluation
Observation Sheet Tuesday, 21 October 1986
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)
- 2
- Number of spots (f)
- 33
- Relative number (R)
- 53
- Observer
- HM
- Reading
- all checks consistent
- File
- 19861021.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 30 | 23 | 29E | 231 | 29E | 14 | |
| 2 | CAO – 3 | -27 | 69E | 193 | 65E | 55 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.