Daily Sunspot Evaluation
Observation Sheet Monday, 12 April 1993
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)
- 17
- Relative number (R)
- 37
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19930412.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKI – 7 | 5 | 70W | 76 | 69W | 9 | 80 |
| 2 | FAI – 10 | -11 | 73W | 79 | 72W | 13 | 86 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.