Daily Sunspot Evaluation
Observation Sheet Saturday, 4 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
- ED
- Reading
- all checks consistent
- File
- 19730804.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 6 | 25E | 215 | 146 | ||
| 2 | H – 5 | -9 | 43E | 197 | 144 | ||
| 3 | J – 1 | -5 | 53W | 293 | 135 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.