Daily Sunspot Evaluation
Observation Sheet Friday, 4 April 2003
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)
- 8
- Number of spots (f)
- 41
- Relative number (R)
- 121
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20030404.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 6 | 9 | 58W | 212 | 61W | ~6 | 69 |
| 2 | AX – 3 | 18 | 19W | 173 | 22W | 1.5 | 82 |
| 3 | HH – 3 | 12 | 14W | 168 | 17W | 3 | 76 |
| 4 | HS – 1 | 1 | 15E | 139 | 12E | ~1 | 81 |
| 5 | HH – 1 | 6 | 71E | 83 | 68E | 3 | 83 |
| 6 | CAI – 7 | -9 | 74W | 228 | 77W | 12 | 73 |
| 7 | DAC – 18 | -13 | 38W | 192 | 41W | 9 | 74 |
| 8 | HS – 2 | -12 | 08W | 162 | 11W | 1 | 77 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.