Daily Sunspot Evaluation
Observation Sheet Tuesday, 7 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)
- 22
- Relative number (R)
- 52
- Observer
- FY
- Reading
- all checks consistent
- File
- 19730807.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | -8 | 52E | 148 | 10/3 | ||
| 2 | J – 1 | -9 | 02E | 198 | 10/4 | ||
| 3 | D – 20 | 7 | 18W | 218 | 10/6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.