Daily Sunspot Evaluation
Observation Sheet Tuesday, 1 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)
- 13
- Relative number (R)
- 43
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19870901.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 8 | -23 | 15E | 48 | 13E | 2.56 | 61 |
| 2 | BXO – 2 | -24 | 60E | 3 | 58E | 3.71 | 63 |
| 3 | WAX – 3 | -22 | 78E | 345 | 76E | 5.22 | 64 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.