Daily Sunspot Evaluation
Observation Sheet Friday, 20 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)
- 4
- Number of spots (f)
- 77
- Relative number (R)
- 117
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20030620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | 29 | 26W | 241 | 29W | ~7 | 161 |
| 2 | EAO – 16 | 17 | 45E | 170 | 42E | 10 | 167 |
| 3 | DAC – 20 | -3 | 04E | 211 | 01E | 8 | 168 |
| 4 | DAI – 38 | -7 | 26E | 189 | 23E | ~9 | 162 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.