Daily Sunspot Evaluation
Observation Sheet Sunday, 26 August 1973
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)
- 13
- Relative number (R)
- 43
- Observer
- HM
- Reading
- all checks consistent
- File
- 19730826.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 15 | 50°E | 258 | 153 | ||
| 2 | A – 1 | 9 | 71°W | 19 | 152 | ||
| 3 | D – 11 | 14 | 38°W | 348 | 150 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.