Daily Sunspot Evaluation
Observation Sheet Tuesday, 24 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)
- 74
- Relative number (R)
- 144
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20010424.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 2 | 8 | 64W | 224 | 63W | 21 | |
| 2 | CSO – 3 | 8 | 54W | 214 | 53W | 6 | |
| 3 | EHC – 53 | 16 | 09E | 151 | 10E | 23 | |
| 4 | HA – 4 | 8 | 42E | 118 | 43E | 2.5 | |
| 5 | AX – 2 | -11 | 36W | 196 | 35W | 0.5 | |
| 6 | DSO – 6 | -21 | 30W | 190 | 29W | 8.5 | |
| 7 | HS – 4 | -11 | 41E | 119 | 42E | 3.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.