Daily Sunspot Evaluation
Observation Sheet Thursday, 10 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)
- 6
- Number of spots (f)
- 29
- Relative number (R)
- 89
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800710.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HKO – 5 | 17 | 20E | 281 | 17E | 6 | |
| 2 | DHO – 5 | 18 | 66E | 235 | 63E | 8 | |
| 3 | ? – 1 | 28 | 80W | 21 | 83W | - | |
| 4 | AXS – 1 | -13 | 50W | 351 | 53W | - | |
| 5 | HKX – 2 | -12 | 24E | 277 | 21E | 3 | |
| 6 | CAI – 15 | -3 | 36E | 265 | 33E | 6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.