Daily Sunspot Evaluation
Observation Sheet Friday, 20 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)
- 9
- Number of spots (f)
- 34
- Relative number (R)
- 124
- Observer
- HE
- Reading
- all checks consistent
- File
- 19890120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 15 | 22 | 59W | 269 | 58W | 15.5 | 24 |
| 2 | CAI – 7 | 18 | 37W | 247 | 36W | 8.0 | 25 |
| 3 | AX – 1 | 23 | 03W | 213 | 02W | - | 26 |
| 4 | CHC – 5 | 21 | 10E | 200 | 11E | 9.0 | 27 |
| 5 | HA – 1 | 22 | 39E | 171 | 40E | 1.25 | 28 |
| 6 | ? – 1 | 23 | 78E | 132 | 79E | 4.0 | 29 |
| 7 | ? – 2 | -34 | 80W | 290 | 79W | 4.0 | 30 |
| 8 | HA – 1 | -20 | 45W | 255 | 44W | 1.5 | 31 |
| 9 | HA – 1 | -18 | 47E | 163 | 48E | 1.0 | 32 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.