Daily Sunspot Evaluation
Observation Sheet Tuesday, 22 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)
- 8
- Number of spots (f)
- 47
- Relative number (R)
- 127
- Observer
- HM
- Reading
- all checks consistent
- File
- 19800422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 12 | 78W | 344 | 8W | ||
| 2 | DAO – 7 | 23 | 28E | 238 | 25E | 7 | |
| 3 | ARX – 1 | 10 | 33E | 233 | 30E | ||
| 4 | BRI – 5 | 14 | 43E | 223 | 40E | 6 | |
| 5 | AXX – 1 | -27 | 74W | 340 | 77W | ||
| 6 | BXI – 8 | -18 | 00 | 266 | 03W | 13 | |
| 7 | CAO – 5 | -27 | 10E | 256 | 07E | 5 | |
| 8 | FEC – 19 | -13 | 28E | 238 | 25E | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.