Daily Sunspot Evaluation
Observation Sheet Friday, 17 November 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)
- 7
- Number of spots (f)
- 47
- Relative number (R)
- 117
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19891117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 7 | 13 | 57W | 255 | 58W | 7 | 396 |
| 2 | BRI – 7 | 11 | 15E | 183 | 14E | 5.5 | 399 |
| 3 | HA – 1 | 30 | 48E | 150 | 47E | 2 | 400 |
| 4 | HA – 1 | 11 | 68E | 129 | 68E | 2 | 406 |
| 5 | CAI – 16 | -21 | 19W | 217 | 20W | 13 | 407 |
| 6 | DAO – 8 | -25 | 00 | 198 | 01W | 8.5 | 408 |
| 7 | CAI – 7 | -8 | 54E | 144 | 53E | 4.5 | 415 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.