Daily Sunspot Evaluation
Observation Sheet Wednesday, 29 July 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)
- 9
- Number of spots (f)
- 77
- Relative number (R)
- 167
- Observer
- SM
- Reading
- all checks consistent
- File
- 19810729.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 8 | 13 | 03W | 275 | 06W | 10 | |
| 2 | DPO – 3 | 15 | 57E | 215 | 54E | 10 | |
| 3 | HKX – 5 | -7 | 71W | 343 | 74W | 8 | |
| 4 | HAX – 1 | -18 | 66W | 338 | 69W | 3 | |
| 5 | AXX – 2 | -19 | 44W | 319 | 50W | 2 | |
| 6 | FKC – 48 | -10 | 14W | 286 | 17W | 21 | |
| 7 | HAX – 1 | -18 | 12W | 284 | 15W | 2 | |
| 8 | HAX – 1 | -2 | 01W | 273 | 04W | 3 | |
| 9 | CAO – 8 | -5 | 21E | 251 | 18E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.