Daily Sunspot Evaluation
Observation Sheet Friday, 13 June 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)
- 6
- Number of spots (f)
- 69
- Relative number (R)
- 129
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20030613.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 9 | 13 | 75W | 22 | 77W | 9.5 | 149 |
| 2 | CAO – 9 | 3 | 48W | 355 | 50W | 9.5 | 151 |
| 3 | HR – 7 | 15 | 48W | 355 | 50W | ~3 | 160 |
| 4 | DAO – 3 | -18 | 50W | 357 | 52W | ~6 | 156 |
| 5 | CAI – 16 | -19 | 25W | 332 | 27W | 5 | 158 |
| 6 | EKI – 25 | -17 | 01W | 308 | 03W | ~13 | 155 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.