Daily Sunspot Evaluation
Observation Sheet Wednesday, 4 July 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)
- 2
- Number of spots (f)
- 15
- Relative number (R)
- 35
- Observer
- ED
- Reading
- counts consistent, some coordinates doubtful
- File
- 19730704.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 10 | 12 | 19E | 290 ⚠ | (2) | ||
| 2 | C – 5 | -6 | 14E | 275 ⚠ | (2) |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.