Daily Sunspot Evaluation
Observation Sheet Tuesday, 29 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)
- 5
- Number of spots (f)
- 38
- Relative number (R)
- 88
- Observer
- OG
- Reading
- all checks consistent
- File
- 19800429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HJA – 1 | 6 | 42E | 128 | 42E | ||
| 2 | HAX – 1 | 11 | 62E | 108 | 62E | 3.5 | |
| 3 | HAI – 4 | -12 | 75W | 245 | 75W | 95 | |
| 4 | FAI – 9 | -31 | 66W | 236 | 66W | 12.5 | |
| 5 | FAC – 23 | -16 | 23E | 147 | 23E | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.