Daily Sunspot Evaluation
Observation Sheet Saturday, 16 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)
- 5
- Number of spots (f)
- 58
- Relative number (R)
- 108
- Observer
- MB
- Reading
- all checks consistent
- File
- 19990116.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 4 | 13 | 21W | 324 | 22W | ~03 | |
| 2 | HS – 1 | 10 | 03W | 306 | 04W | ~02 | |
| 3 | BXO – 5 | 17 | 09E | 294 | 08E | ~03 | |
| 4 | EAC – 25 | 19 | 38E | 265 | 37E | 13 | |
| 5 | EAC – 23 | -24 | 37E | 266 | 36E | ~14.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.