Daily Sunspot Evaluation
Observation Sheet Friday, 26 June 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)
- 14
- Relative number (R)
- 44
- Observer
- HM
- Reading
- all checks consistent
- File
- 19870626.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 8 | 20 | 30W | 260 | 33W | 11.43 | 37 |
| 2 | DSO – 2 | 29 | 74E | 159 | 68E | 12.45 | 38 |
| 3 | HSX – 4 | -31 | 24W | 254 | 27W | 1.41 | 35 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.