Daily Sunspot Evaluation
Observation Sheet Saturday, 23 June 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)
- 35
- Relative number (R)
- 65
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730623.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 9 | -3 | 24E | 51 | 418 | ||
| 2 | G – 4 | -13 | 38E | 37 | 420 | ||
| 3 | E – 22 | -8 | 10E | 65 | 417 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.