Daily Sunspot Evaluation
Observation Sheet Wednesday, 7 April 2004
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)
- 5
- Number of spots (f)
- 19
- Relative number (R)
- 69
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20040407.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | -10 | 61W | 24 | 63W | 4 | 60 |
| 2 | CRO – 3 | -14 | 47W | 10 | 49W | 6.5 | 55 |
| 3 | DRI – 11 | -17 | 08E | 315 | 06E | ~5 | 58 |
| 4 | HS – 1 | -14 | 09E | 314 | 07E | 1.5 | 57 |
| 5 | AX – 1 | -20 | 15E | 308 | 13E | 61 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.