Daily Sunspot Evaluation
Observation Sheet Thursday, 24 April 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)
- 6
- Number of spots (f)
- 55
- Relative number (R)
- 115
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800424.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DSO – 4 | 23 | 02E | 238 | 01W | 7.5 | |
| 2 | AXX – 1 | -15 | 33W | 273 | 36W | - | |
| 3 | DAO – 14 | -30 | 01E | 239 | 02W | 7 | |
| 4 | FKI – 34 | -13 | 02E | 238 | 01W | 16 | |
| 5 | AXX – 1 | -24 | 56E | 184 | 53E | - | |
| 6 | AXX – 1 | -8 | 79E | 161 | 76E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.