Daily Sunspot Evaluation
Observation Sheet Sunday, 31 October 1999
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)
- 9
- Number of spots (f)
- 68
- Relative number (R)
- 158
- Observer
- TÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19991031.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ERI – 16 | 8 | 06W | 106 | 07W | 13 | |
| 2 | AX – 4 | 18 | 11W | 111 | 12W | ~2 | |
| 3 | DAO – 11 | 11 | 05E | 95 | 04E | ~10 | |
| 4 | HS – 1 | 20 | 62E | 38 | 61E | ~15 | |
| 5 | FSO – 8 | -12 | 68W | 165 | 69W | 23 | |
| 6 | HA – 3 | -46 | 48W | 148 | 49W | 2 | |
| 7 | EAO – 7 | -25 | 45W | 145 | 46W | ~10 | |
| 8 | HA – 6 | -15 | 11E | 89 | 10E | ~5 | |
| 9 | DAO – 12 | -17 | 24E | 86 ⚠ | 23E | ~8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.