Daily Sunspot Evaluation
Observation Sheet Monday, 7 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)
- 9
- Number of spots (f)
- 68
- Relative number (R)
- 158
- Observer
- TÖ
- Reading
- all checks consistent
- File
- 19800707.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 33 | 29 | 47W | 27 | 50W | 14.5 | |
| 2 | BXO – 4 | 21 | 45E | 295 | 42E | 4 | |
| 3 | AXX – 1 | 14 | 46E | 294 | 43E | - | |
| 4 | AXX – 2 | 24 | 59E | 281 | 56E | - | |
| 5 | HKI – 14 | 18 | 59E | 281 | 56E | 10 | |
| 6 | BXO – 2 | -23 | 68W | 48 | 71W | 3 | |
| 7 | CAI – 8 | -5 | 47W | 27 | 50W | 6 | |
| 8 | BXO – 3 | -15 | 10W | 350 | 13W | 4 | |
| 9 | HAX – 1 | -12 | 63E | 277 | 60E | 2.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.