Daily Sunspot Evaluation
Observation Sheet Monday, 27 July 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)
- 4
- Number of spots (f)
- 44
- Relative number (R)
- 84
- Observer
- HG
- Reading
- all checks consistent
- File
- 19870727.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAO – 17 | 29 | 35E | 144 | 33E | 11.55 | 47 |
| 2 | EKI – 4 | -30 | 74W | 253 | 76W | 12.50 | 42 |
| 3 | HAX – 1 | -31 | 60W | 239 | 62W | 2.49 | 41 |
| 4 | EAI – 22 | -22 | 07W | 186 | 09W | 15.52 | 44 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.