Daily Sunspot Evaluation
Observation Sheet Tuesday, 12 December 2000
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)
- 7
- Number of spots (f)
- 45
- Relative number (R)
- 115
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20001212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 11 | 51W | 167 | 53W | 1 | |
| 2 | CAO – 3 | 25 | 15W | 131 | 17W | 5.5 | |
| 3 | EAC – 15 | 15 | 28E | 88 | 26E | 11.5 | |
| 4 | DAC – 14 | 7 | 34E | 82 | 32E | 8 | |
| 5 | HA – 1 | 18 | 53E | 63 | 51E | 1 | |
| 6 | HA – 3 | -9 | 32E | 84 | 30E | 3 | |
| 7 | DAO – 7 | -24 | 51E | 65 | 49E | 5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.