Daily Sunspot Evaluation
Observation Sheet Thursday, 26 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)
- 7
- Number of spots (f)
- 84
- Relative number (R)
- 154
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20010426.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 64 | 18 | 16W | 154 | 19W | 25 | |
| 2 | HS – 7 | 9 | 18E | 120 | 15E | 3 | |
| 3 | HK – 1 | 28 | 73E | 65 | 70E | ~3 | |
| 4 | HA – 2 | -11 | 60W | 198 | 63W | 1 | |
| 5 | DKO – 5 | -21 | 55W | 193 | 58W | ~8 | |
| 6 | DSO – 4 | -21 | 31W | 169 | 34W | 6.5 | |
| 7 | HH – 1 | -10 | 17E | 121 | 14E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.