Daily Sunspot Evaluation
Observation Sheet Tuesday, 4 April 2006
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)
- 4
- Number of spots (f)
- 31
- Relative number (R)
- 71
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20060404.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 5 | -6 | 03W | 88 | 04W | ~2.5 | |
| 2 | AX – 1 | -7 | 14E | 71 | 13E | ||
| 3 | DKC – 12 | -12 | 28W | 113 | 29W | ~9 | |
| 4 | EAI – 13 | -17 | 04W | 89 | 05W | ~10.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.