Daily Sunspot Evaluation
Observation Sheet Saturday, 9 February 2002
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)
- 12
- Number of spots (f)
- 58
- Relative number (R)
- 178
- Observer
- TA
- Reading
- all checks consistent
- File
- 20020209.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 6 | 9 | 20W | 300 | 21W | ~2.5 | |
| 2 | AX – 1 | 13 | 20W | 300 | 21W | — | |
| 3 | BXO – 6 | 12 | 03W | 283 | 04W | ~5 | |
| 4 | AX – 1 | 15 | 22E | 258 | 21E | — | |
| 5 | HA – 6 | 18 | 61E | 219 | 60E | 5 | |
| 6 | ? – 1 | 23 | 75E | 205 | 74E | — | |
| 7 | ? – 4 | 24 | 77E | 203 | 76E | — | |
| 8 | CSO – 2 | -6 | 44W | 324 | 45W | ~5 | |
| 9 | CSO – 8 | -26 | 02E | 278 | 01E | 4 | |
| 10 | DRI – 18 | -13 | 10E | 270 | 09E | 7 | |
| 11 | AX – 2 | -30 | 25E | 255 | 24E | 0.5 | |
| 12 | AX – 3 | -4 | 31E | 249 | 30E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.