Daily Sunspot Evaluation
Observation Sheet Friday, 6 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)
- 3
- Number of spots (f)
- 49
- Relative number (R)
- 79
- Observer
- HM
- Reading
- all checks consistent
- File
- 19730706.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 5 | 1 | 14°E | 243 | 430 | ||
| 2 | D – 25 | -6 | 13°W | 276 | 429 | ||
| 3 | C – 19 | 12 | 06°W | 269 | 423 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.