Daily Sunspot Evaluation
Observation Sheet Saturday, 17 November 1990
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)
- 5
- Number of spots (f)
- 63
- Relative number (R)
- 113
- Observer
- HE
- Reading
- all checks consistent
- File
- 19901117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 3 | 7 | 72W | 133 | 74W | 6 | 534 |
| 2 | FKC – 46 | 19 | 35E | 26 | 33E | 22.5 | 532 |
| 3 | HA – 2 | -31 | 68W | 129 | 70W | 3 | 527 |
| 4 | CAI – 11 | -22 | 40W | 101 | 42W | 6 | 531 |
| 5 | ? – 1 | -18 | 78E | 343 | 76E | 5 | 535 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.