Daily Sunspot Evaluation
Observation Sheet Sunday, 13 July 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)
- 7
- Number of spots (f)
- 64
- Relative number (R)
- 134
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKI – 20 | 18 | 24W | 284 | 26W | 16 | |
| 2 | DAO – 6 | 18 | 26E | 234 | 24E | 7 | |
| 3 | AKK – 2 | -8 | 23W | 283 | 25W | - | |
| 4 | HSK – 1 | -12 | 17W | 277 | 19W | 2 | |
| 5 | ARK – 2 | -4 | 09W | 269 | 11W | 0.5 | |
| 6 | EKK – 29 | -12 | 52E | 208 | 50E | 11.5 | |
| 7 | BAI – 4 | -13 | 73E | 187 | 71E | 7 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.