Daily Sunspot Evaluation
Observation Sheet Thursday, 3 September 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)
- 16
- Relative number (R)
- 46
- Observer
- HM
- Reading
- all checks consistent
- File
- 19870903.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | -17 | 66W | 103 | 69W | -73 | 62 |
| 2 | ARX – 1 | -24 | 34E | 3 | 31E | -71 | 63 |
| 3 | EAI – 14 | -21 | 55E | 342 | 52E | 14-72 | 64 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.