Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 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)
- 116
- Relative number (R)
- 166
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19901120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 17 | 49W | 70 | 51W | 1.5 | 538 |
| 2 | FKC – 99 | 18 | 03W | 24 | 05W | 24 | 532 |
| 3 | AX – 1 | 3 | 02W | 23 | 04W | - | 541 |
| 4 | CAI – 11 | -17 | 23W | 44 | 25W | 5.5 | 539 |
| 5 | HA – 3 | -18 | 35E | 346 | 33E | 3.5 | 536 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.