Daily Sunspot Evaluation
Observation Sheet Sunday, 27 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)
- 2
- Number of spots (f)
- 3
- Relative number (R)
- 23
- Observer
- FL
- Reading
- all checks consistent
- File
- 19870927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 14 | 52W | 132 | 55W | 1.75 | 68 |
| 2 | BRO – 2 | -27 | 63W | 143 | 66W | 4.81 | 71 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.