Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 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)
- 12
- Number of spots (f)
- 97
- Relative number (R)
- 217
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20010411.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 19 | 48W | 24 | 51W | ||
| 2 | AX – 2 | 19 | 29W | 5 | 32W | 1.5 | |
| 3 | ESI – 12 | 26 | 11W | 347 | 14W | 12.5 | |
| 4 | DAC – 22 | -8 | 43W | 19 | 46W | 10 | |
| 5 | AX – 1 | -15 | 40W | 16 | 43W | ||
| 6 | EKC – 28 | -23 | 20W | 356 | 23W | 11.5 | |
| 7 | AX – 1 | -15 | 19W | 355 | 22W | ||
| 8 | AX – 4 | -9 | 03W | 339 | 06W | 3 | |
| 9 | HS – 2 | -8 | 05E | 331 | 02E | 2 | |
| 10 | BXO – 10 | -17 | 05E | 331 | 02E | 2.6 | |
| 11 | HS – 8 | -13 | 32E | 304 | 29E | 3 | |
| 12 | DSI – 5 | -10 | 48E | 288 | 45E | 24.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.