Daily Sunspot Evaluation
Observation Sheet Sunday, 10 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)
- 10
- Number of spots (f)
- 70
- Relative number (R)
- 170
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20020210.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 5 | 8 | 31W | 300 | 34W | ~3 | |
| 2 | CAO – 4 | 18 | 49E | 220 | 46E | 4 | |
| 3 | HH – 1 | 21 | 64E | 205 | 61E | ~2 | 78 |
| 4 | EHI – 9 | 12 | 66E | 203 | 63E | 12 | |
| 5 | HA – 2 | -7 | 52W | 321 | 55W | ~1 | |
| 6 | DAC – 32 | -14 | 01W | 270 | 09W | 9.5 | |
| 7 | AX – 1 | -31 | 09E | 260 | 06E | - | |
| 8 | CRO – 4 | -30 | 15E | 254 | 12E | 3.5 | |
| 9 | DAO – 7 | -4 | 19E | 250 | 16E | ~5 | |
| 10 | HS – 5 | -27 | 09W | 278 | 12W | 1.5 | 66 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.