Daily Sunspot Evaluation
Observation Sheet Wednesday, 20 February 1980
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)
- 46
- Relative number (R)
- 126
- Observer
- TÖ
- Reading
- counts consistent, some coordinates doubtful
- File
- 19800220.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKX – 5 | 8 | 50W | 52 | 52W | 4 | |
| 2 | DAO – 5 | 10 | 51E | 49 ⚠ | 49W | 5.5 | |
| 3 | CRI – 9 | -18 | 32W | 34 | 34W | 11 | |
| 4 | DAI – 8 | -9 | 35E | 33 ⚠ | 33E | 3 | |
| 5 | AXX – 1 | -24 | 25W | 27 | 27W | - | |
| 6 | BXX – 7 | -18 | 21W | 23 | 23W | 2.5 | |
| 7 | DAO – 10 | -8 | 08W | 10 | 10W | 4.5 | |
| 8 | AXX – 1 | -25 | 14E | 12 ⚠ | 12E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.