Daily Sunspot Evaluation
Observation Sheet Saturday, 26 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)
- 9
- Number of spots (f)
- 70
- Relative number (R)
- 160
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800426.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 2 | 22 | 30W | 241 | 31W | 2.5 | |
| 2 | AXX – 2 | 11 | 52E | 159 | 51E | - | |
| 3 | CII – 4 | 8 | 66E | 145 | 65E | 3.5 | |
| 4 | CAI – 2 | 10 | 70E | 141 | 69E | 3 | |
| 5 | ? – 1 | 6 | 85E | 126 | 84E | 2 | |
| 6 | FKC – 31 | -13 | 29W | 240 | 30W | 19 | |
| 7 | FKO – 10 | -31 | 28W | 239 | 29W | 10.5 | |
| 8 | AXX – 1 | -9 | 49E | 162 | 48E | - | |
| 9 | DAC – 17 | -18 | 65E | 146 | 64E | 10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.