Daily Sunspot Evaluation
Observation Sheet Monday, 7 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)
- 5
- Number of spots (f)
- 13
- Relative number (R)
- 63
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20030407.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HH – 2 | 13 | 56W | 167 | 56W | ~3.5 | 76 |
| 2 | HH – 4 | 6 | 30E | 81 | 30E | ~4.5 | 83 |
| 3 | HS – 1 | -15 | 78W | 189 | 78W | 2 | 74 |
| 4 | HS – 1 | -11 | 50W | 161 | 50W | ~0.5 | 77 |
| 5 | CAO – 5 | -8 | 28W | 139 | 28W | 3 | 84 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.