Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 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)
- 6
- Relative number (R)
- 36
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19870929.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 30 | 83E | 329 | 82E | 12 | 72 |
| 2 | AXX – 2 | -21 | 58E | 354 | 57E | 0.75 | 73 |
| 3 | AXX – 1 | -25 | 69E | 343 | 68E | 0.5 | 74 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.