Daily Sunspot Evaluation
Observation Sheet Tuesday, 12 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)
- 8
- Number of spots (f)
- 63
- Relative number (R)
- 143
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20020212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 9 | 58W | 301 | 61W | 2 | |
| 2 | DSO – 3 | 18 | 20E | 223 | 17E | ~3.5 | |
| 3 | HS – 1 | 22 | 39E | 204 | 36E | ~2 | |
| 4 | EAC – 24 | 13 | 41E | 202 | 38E | ~14 | |
| 5 | HS – 3 | -26 | 35W | 278 | 38W | 4.5 | |
| 6 | ESC – 25 | -13 | 28W | 271 | 31W | ~11 | |
| 7 | HA – 2 | -4 | 12W | 255 | 15W | ~1 | |
| 8 | DAO – 3 | -23 | 23E | 220 | 20E | 7.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.