Daily Sunspot Evaluation
Observation Sheet Wednesday, 15 December 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)
- 7
- Number of spots (f)
- 65
- Relative number (R)
- 135
- Observer
- AK0
- Reading
- all checks consistent
- File
- 19991215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 2 | 11 | 74W | 302 | 79W | 2 | 7-2 |
| 2 | AX – 2 | 10 | 57E | 171 | 54E | 1 | |
| 3 | HR – 1 | -25 | 22W | 250 | 25W | 4 | |
| 4 | AX – 2 | -23 | 13W | 241 | 16W | ||
| 5 | DRS – 24 | -14 | 07W | 235 | 10W | 12 | |
| 6 | DAO – 11 | -32 | 05W | 233 | 08W | 7 | |
| 7 | OKC – 23 | -12 | 56E | 172 | 53E | 8 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.