Daily Sunspot Evaluation
Observation Sheet Wednesday, 18 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)
- 8
- Number of spots (f)
- 98
- Relative number (R)
- 178
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890118.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 44 | 22 | 30W | 269 | 32W | 15.75 | 33 |
| 2 | CAO – 13 | 18 | 08W | 247 | 10W | 8.75 | 34 |
| 3 | AX – 1 | 15 | 27E | 212 | 25E | 35 | |
| 4 | CHI – 4 | 21 | 40E | 199 | 38E | 6.75 | 32 |
| 5 | HA – 1 | 23 | 70E | 169 | 68E | 2.50 | 31 |
| 6 | FKC – 28 | -32 | 63W | 302 | 65W | 23.0 | 30 |
| 7 | BXI – 5 | -31 | 41W | 280 | 43W | 5.75 | 29 |
| 8 | HS – 2 | -20 | 17W | 256 | 19W | 2.0 | 28 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.