Daily Sunspot Evaluation
Observation Sheet Saturday, 13 September 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)
- 8
- Number of spots (f)
- 85
- Relative number (R)
- 165
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800913.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 3 | 12 | 72W | 231 | 73W | 3 | |
| 2 | ? – 2 | 27 | 72W | 231 | 73W | 1 | |
| 3 | DAO – 23 | 8 | 16W | 175 | 17W | 6 | |
| 4 | BXI – 5 | 15 | 01W | 160 | 02W | 1 | |
| 5 | ELI – 29 | 14 | 12E | 147 | 11E | 14 | |
| 6 | CAI – 14 | -8 | 11E | 148 | 10E | 5 | |
| 7 | HSX – 1 | -9 | 40E | 119 | 39E | 2 | |
| 8 | DAO – 8 | -11 | 48E | 111 | 47E | 5.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.