Daily Sunspot Evaluation
Observation Sheet Friday, 2 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)
- 2
- Number of spots (f)
- 7
- Relative number (R)
- 27
- Observer
- HG
- Reading
- counts consistent, some coordinates doubtful
- File
- 19871002.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 6 | 31 | 40E | 333 ⚠ | 38E | 8.5 | 72 |
| 2 | AXX – 1 | 34 | 26E | 297 ⚠ | 24E | 1.85 | 75 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.