Daily Sunspot Evaluation
Observation Sheet Friday, 12 March 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)
- 3
- Number of spots (f)
- 21
- Relative number (R)
- 51
- Observer
- TK
- Reading
- all checks consistent
- File
- 19930312.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 4 | 109 | 42W | 100 | 45W | 2.5 | 57 |
| 2 | DAO – 7 | 15 | 63E | 355 | 60E | 6 | 60 |
| 3 | FXO – 10 | -5 | 50W | 108 | 53W | 6.5 | 54 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.