Daily Sunspot Evaluation
Observation Sheet Tuesday, 2 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)
- 3
- Number of spots (f)
- 10
- Relative number (R)
- 40
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730102.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 8 | 9 | 45E | 138 | 1 | ||
| 2 | J – 1 | 14 | 66E | 117 | 3 | ||
| 3 | A – 1 | -16 | 10E | 173 | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.