Daily Sunspot Evaluation
Observation Sheet Wednesday, 3 January 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)
- 4
- Number of spots (f)
- 30
- Relative number (R)
- 70
- Observer
- FA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19730103.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 15 | 6 | 32E | 139 | 1 | ||
| 2 | H – 8 | 13 | 56E | 115 | 3 | ||
| 3 | A – 3 | -17 | 02W | ⚠ | 173E | 4 | |
| 4 | B – 4 | 18 | 28W | 199 | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.