Daily Sunspot Evaluation
Observation Sheet Sunday, 31 August 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)
- 13
- Number of spots (f)
- 151
- Relative number (R)
- 281
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800831.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 28 | 63W | 35 | 65W | 1.5 | |
| 2 | AXX – 1 | 8 | 63W | 35 | 65W | - | |
| 3 | DJO – 10 | 10 | 38W | 10 | 40W | 7.25 | |
| 4 | DEO – 11 | 23 | 17W | 349 | 19W | 7.75 | |
| 5 | BXI – 6 | 18 | 04E | 328 | 02E | 6 | |
| 6 | ECC – 19 | 12 | 35E | 297 | 33E | 13 | |
| 7 | AXX – 1 | 11 | 64E | 268 | 62E | - | |
| 8 | AXX – 1 | 15 | 80E | 252 | 78E | - | |
| 9 | EHO – 9 | -27 | 30W | 2 | 32W | 13 | |
| 10 | BXO – 3 | -8 | 10W | 342 | 12W | 5.5 | |
| 11 | ECC – 72 | -8 | 33E | 299 | 31E | 14 | |
| 12 | DAI – 14 | -5 | 45E | 287 | 43E | 5 | |
| 13 | HAX – 3 | -10 | 70E | 262 | 68E | 1.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.