Daily Sunspot Evaluation
Observation Sheet Sunday, 8 April 2001
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)
- 81
- Relative number (R)
- 171
- Observer
- TA
- Reading
- all checks consistent
- File
- 20010408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 3 | 11 | 70W | 86 | 73W | ~8 | |
| 2 | HS – 1 | 27 | 65W | 81 | 68W | 3 | |
| 3 | OAI – 15 | 26 | 27E | 349 | 24E | 9 | |
| 4 | CAO – 2 | -16 | 47W | 63 | 50W | 5.5 | |
| 5 | DSI – 21 | -9 | 03W | 19 | 06W | ~9 | |
| 6 | EKC – 35 | -22 | 18E | 358 | 15E | 10.5 | |
| 7 | AX – 1 | -16 | 43E | 333 | 40E | ||
| 8 | HS – 2 | -9 | 46E | 330 | 43E | ~4 | |
| 9 | HA – 1 | -12 | 73E | 303 | 70E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.