Daily Sunspot Evaluation
Observation Sheet Wednesday, 29 April 1981
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)
- 56
- Relative number (R)
- 166
- Observer
- GT
- Reading
- all checks consistent
- File
- 19810429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | 5 | 62W | 98 | 65W | 5 | |
| 2 | CAO – 9 | 15 | 07E | 29 | 04E | 55 | |
| 3 | BXO – 3 | 27 | 10E | 26 | 07E | 4 | |
| 4 | CKI – 27 | 3 | 14E | 22 | 11E | 13 | |
| 5 | ARX – 1 | 4 | 52E | 344 | 49E | 075 | |
| 6 | HAX – 1 | 20 | 55E | 341 | 52E | 2 | |
| 7 | HAX – 2 | 7 | 77E | 319 | 74E | 25 | |
| 8 | ? – 1 | 14 | 84E | 312 | 81E | 3 | |
| 9 | AXX – 3 | -1 | 04E | 32 | 01E | 2 | |
| 10 | BXI – 5 | -15 | 19E | 17 | 16E | 5 | |
| 11 | AXX – 1 | -8 | 61E | 335 | 57E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.