Daily Sunspot Evaluation
Observation Sheet Sunday, 26 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)
- 60
- Relative number (R)
- 100
- Observer
- TS
- Reading
- all checks consistent
- File
- 19870726.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKO – 9 | 29 | 45E | 146 | 43E | 12 55 | 47 |
| 2 | EKS – 16 | -29 | 65W | 256 | 67W | 12 50 | 42 |
| 3 | HKX – 2 | -32 | 49W | 240 | 51W | 3 49 | 41 |
| 4 | DAI – 33 | -22 | 06E | 185 | 04E | 14 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.