Daily Sunspot Evaluation
Observation Sheet Friday, 29 July 1988
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)
- 7
- Number of spots (f)
- 85
- Relative number (R)
- 155
- Observer
- HE
- Reading
- all checks consistent
- File
- 19880729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 4 | 26 | 66W | 68 | 69W | 5 | 161 |
| 2 | HH – 1 | 12 | 9W | 11 | 12W | 2.5 | 153 |
| 3 | BXI – 19 | 15 | 7E | 356 | 4E | 6.5 | 154 |
| 4 | BXI – 6 | 26 | 36E | 326 | 33E | 2.5 | 162 |
| 5 | FKC – 25 | 29 | 57E | 305 | 54E | 17 | 159 |
| 6 | AX – 2 | 36 | 70E | 292 | 67E | 2 | 163 |
| 7 | DKC – 28 | -21 | 2E | 0 | 1W | 10 | 1156 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.