Daily Sunspot Evaluation
Observation Sheet Thursday, 22 October 1987
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)
- 3
- Number of spots (f)
- 14
- Relative number (R)
- 44
- Observer
- HM
- Reading
- all checks consistent
- File
- 19871022.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | -32 | 71W | 181 | 74W | 2.91 | 80 |
| 2 | DAF – 6 | -42 | 04W | 114 | 07W | 7.93 | 83 |
| 3 | CAE – 7 | -33 | 18E | 92 | 15E | 8.92 | 82 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.