Daily Sunspot Evaluation
Observation Sheet Monday, 1 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)
- 2
- Number of spots (f)
- 12
- Relative number (R)
- 32
- Observer
- ED
- Reading
- counts consistent, some coordinates doubtful
- File
- 19730101.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 11 | 6 | 53E | 133 ⚠ | 1 | ||
| 2 | J – 1 | -16 | 70W | 268 ⚠ | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.