Daily Sunspot Evaluation
Observation Sheet Saturday, 20 September 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)
- 11
- Relative number (R)
- 61
- Observer
- MS
- Reading
- all checks consistent
- File
- 20030920.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 17 | 17E | 61 | 15E | 0.5 | 257 |
| 2 | HS – 1 | 9 | 42E | 36 | 40E | 2 | 260 |
| 3 | ? – 1 | 4 | 82E | 356 | 80E | 4 | 261 |
| 4 | ? – 1 | -10 | 80W | 158 | 82W | 2 | 259 |
| 5 | DAO – 7 | -11 | 33W | 111 | 35W | 7.5 | 256 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.