Daily Sunspot Evaluation
Observation Sheet Saturday, 19 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)
- 11
- Number of spots (f)
- 80
- Relative number (R)
- 190
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 16 | 13 | 36W | 340 | 37W | 9 | |
| 2 | CJO – 3 | 24 | 64E | 238 | 65E | 8 | |
| 3 | AXX – 1 | 10 | 74E | 230 | 73E | - | |
| 4 | ? – 1 | 15 | 85E | 219 | 84E | - | |
| 5 | ? – 2 | -30 | 82W | 26 | 83W | 5 | |
| 6 | HSX – 1 | -8 | 77W | 21 | 78W | 2 | |
| 7 | HSX – 5 | -31 | 65W | 9 | 66W | 5 | |
| 8 | CJO – 3 | -16 | 60W | 4 | 61W | 3 | |
| 9 | DAS – 12 | -27 | 35W | 339 | 36W | 9 | |
| 10 | EKC – 20 | -17 | 38E | 266 | 37E | 12 | |
| 11 | EHS – 16 | -12 | 66E | 238 | 65E | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.