Daily Sunspot Evaluation
Observation Sheet Friday, 10 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)
- 11
- Relative number (R)
- 41
- Observer
- SM
- Reading
- all checks consistent
- File
- 19730810.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | -8 | 09E | 150 | 143 | ||
| 2 | J – 1 | -8 | 39W | 198 | 144 | ||
| 3 | G – 7 | 7 | 61W | 220 | 146 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.