Daily Sunspot Evaluation
Observation Sheet Friday, 13 January 1989
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)
- 16
- Number of spots (f)
- 145
- Relative number (R)
- 305
- Observer
- HE
- Reading
- counts consistent, some coordinates doubtful
- File
- 19890113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 5 | 11 | 66W | 9 | 66W | 0.0 | 15 |
| 2 | CAI – 8 | 28 | 56W | 359 | 56W | 10.0 | 16 |
| 3 | AX – 1 | 30 | 29W | 332 | 29W | - | 17 |
| 4 | AX – 5 | 23 | 32E | 270 | 33E | 3.5 | 27 |
| 5 | CAO – 9 | 19 | 35E | 268 | 35E | 6.5 | 21 |
| 6 | HS – 2 | 29 | 38E | 265 | 38E | 1.0 | 22 |
| 7 | EKI – 11 | 18 | 58E | 245 | 58E | 12.0 | 24 |
| 8 | BXI – 4 | -27 | 48W | 361 ⚠ | 48W | 6.5 | 19 |
| 9 | HK – 4 | -19 | 47W | 350 | 47W | 4.0 | 18 |
| 10 | DSI – 14 | -15 | 27W | 330 | 27W | 13.5 | 12 |
| 11 | AX – 1 | -23 | 02W | 305 | 02W | - | 11 |
| 12 | FKC – 53 | -31 | 00 | 303 | 00 | 20.0 | E1 |
| 13 | AX – 2 | -20 | 22E | 281 | 22E | 0.5 | 2 |
| 14 | CAI – 13 | -32 | 25E | 278 | 25E | 8.0 | 26 |
| 15 | AX – 5 | -16 | 34E | 269 | 34E | 2.5 | 23 |
| 16 | HK – 8 | -20 | 47E | 256 | 47E | 5.0 | 20 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.