Daily Sunspot Evaluation
Observation Sheet Friday, 6 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)
- 10
- Number of spots (f)
- 61
- Relative number (R)
- 161
- Observer
- AK0
- Reading
- counts consistent, some coordinates doubtful
- File
- 20010406.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 3 | 9 | 41W | 116 ⚠ | 37W | 2 | |
| 2 | CSI – 3 | 9 | 43W | 85 | 46W | 6.5 | |
| 3 | CRO – 7 | 31 | 40W | 82 | 43W | 3 | |
| 4 | HA – 3 | 25 | 36W | 78 | 39W | 3 | |
| 5 | AX – 2 | 7 | 22W | 64 | 25W | 1 | |
| 6 | EAC – 9 | 26 | 56E | 346 | 53E | 12 | |
| 7 | HK – 4 | -10 | 75W | 117 | 78W | 4 | |
| 8 | DSI – 15 | -9 | 24E | 18 | 21E | 7 | |
| 9 | HK – 13 | -23 | 45E | 357 | 42E | 10.5 | |
| 10 | HA – 2 | -6 | 73E | 329 | 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.