Daily Sunspot Evaluation
Observation Sheet Saturday, 9 January 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)
- 4
- Number of spots (f)
- 18
- Relative number (R)
- 58
- Observer
- HE
- Reading
- all checks consistent
- File
- 19990109.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 4 | 15 | 59W | 93 | 59W | 12 | |
| 2 | BRO – 4 | -29 | 11W | 45 | 11W | 3 | |
| 3 | BRO – 8 | -29 | 13E | 21 | 13E | 3 | |
| 4 | AX – 2 | -23 | 29E | 5 | 29E | 0.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.