Daily Sunspot Evaluation
Observation Sheet Monday, 15 February 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)
- 10
- Number of spots (f)
- 123
- Relative number (R)
- 223
- Observer
- ıH
- Reading
- all checks consistent
- File
- 19990215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 23 | 28W | 295 | 29W | ~1 | |
| 2 | HA – 1 | 17 | 10W | 277 | 11W | 2 | |
| 3 | EKO – 30 | 14 | 08W | 275 | 09W | 15 | |
| 4 | EAC – 22 | 20 | 03E | 264 | 02E | 11 | |
| 5 | HA – 4 | 19 | 34E | 233 | 33E | ~2.5 | |
| 6 | HS – 2 | 21 | 41E | 223 | 43E | 1 | |
| 7 | DAO – 23 | -29 | 35W | 302 | 36W | 9 | |
| 8 | DKI – 32 | -21 | 02W | 269 | 03W | 9 | Dkc! |
| 9 | CAO – 6 | -17 | 13E | 254 | 12E | 2.5 | Ho-6 |
| 10 | HS – 1 | -16 | 28E | 239 | 27E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.