Daily Sunspot Evaluation
Observation Sheet Friday, 28 August 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)
- 8
- Relative number (R)
- 28
- Observer
- FL
- Reading
- all checks consistent
- File
- 19870828.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BRZ – 7 | 116 | 07W | 124 | 10W | 1.5 | 59 |
| 2 | ARX – 1 | -23 | 69E | 48 | 66E | 0.5 | 61 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.