Daily Sunspot Evaluation
Observation Sheet Saturday, 25 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)
- 5
- Number of spots (f)
- 44
- Relative number (R)
- 94
- Observer
- HG
- Reading
- all checks consistent
- File
- 19870725.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 7 | 29 | 60E | 145 | 58E | 4.5 55 | 47 |
| 2 | DAC – 16 | -29 | 50W | 255 | 52W | 12.50 | 42 |
| 3 | HKX – 2 | -32 | 35W | 240 | 37W | 2.49 | 41 |
| 4 | BRI – 5 | -19 | 20W | 225 | 22W | 3.53 | 45 |
| 5 | DAI – 14 | -22 | 20E | 185 | 18E | 8.52 | 44 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.