Daily Sunspot Evaluation
Observation Sheet Sunday, 25 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)
- 9
- Number of spots (f)
- 70
- Relative number (R)
- 160
- Observer
- TA
- Reading
- all checks consistent
- File
- 19930425.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 2 | 10 | 66W | 264 | 68W | 3.5 | 102 |
| 2 | DAI – 28 | 11 | 32W | 230 | 34W | 8 | 104 |
| 3 | BXO – 7 | 10 | 10E | 188 | 08E | 11.5 | 104 |
| 4 | DAO – 3 | 8 | 69E | 129 | 67E | 8 | 103 |
| 5 | DAC – 18 | -14 | 54W | 252 | 56W | 10 | 97 |
| 6 | HR – 1 | -10 | 48W | 246 | 50W | 0.5 | 106 |
| 7 | AX – 1 | -23 | 29W | 227 | 31W | - | 105 |
| 8 | CRO – 6 | -15 | 14W | 212 | 16W | 5.5 | 92 |
| 9 | BXO – 4 | -20 | 41E | 157 | 39E | 4.5 | 101 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.