Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 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)
- 12
- Number of spots (f)
- 75
- Relative number (R)
- 195
- Observer
- HÇ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HR – 1 | 24 | 33W | 287 | 34W | 0.5 | |
| 2 | HS – 1 | 17 | 22W | 276 | 25W | 2 | |
| 3 | EKI – 23 | 14 | 20W | 274 | 21W | 15 | ~Eko! |
| 4 | EKC – 18 | 19 | 07W | 261 | 08W | 11 | Eke! |
| 5 | HA – 2 | 18 | 22E | 232 | 21E | 3 | |
| 6 | AX – 1 | 20 | 31E | 223 | 30E | 0.5 | |
| 7 | ? – 1 | 15 | 75E | 179 | 74W | ? | |
| 8 | DAO – 15 | -30 | 47W | 301 | 48W | 10.5 | |
| 9 | DKI – 9 | -23 | 13W | 267 | 14W | 9 | Okc! |
| 10 | SRO – 2 | -18 | 00 | 254 | 01W | 1 | Ha-2! |
| 11 | HS – 1 | -17 | 16E | 258 ⚠ | 15E | 2 | |
| 12 | AX – 1 | -24 | 66E | 188 | 65E | 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.