Daily Sunspot Evaluation
Observation Sheet Wednesday, 23 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)
- 12
- Number of spots (f)
- 79
- Relative number (R)
- 199
- Observer
- HM
- Reading
- all checks consistent
- File
- 19800723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AKK – 1 | 7 | 60W | 186 | 61W | ||
| 2 | CAI – 7 | 19 | 46W | 172 | 47W | 4 | |
| 3 | BKO – 10 | 14 | 30W | 156 | 31W | 7 | |
| 4 | CSO – 6 | 16 | 09W | 135 | 10W | 7 | |
| 5 | CAO – 4 | 20 | 71E | 55 | 70E | 8.5 | |
| 6 | DAO – 3 | -26 | 70W | 196 | 71W | 7 | |
| 7 | HKX – 9 | -27 | 43W | 169 | 44W | 5 | |
| 8 | DSF – 5 | -13 | 33W | 159 | 34W | 5.5 | |
| 9 | HKA – 10 | -20 | 30W | 156 | 31W | 5 | |
| 10 | CAI – 3 | -12 | 04E | 122 | 03E | 7 | |
| 11 | DAI – 20 | -19 | 10E | 116 | 09E | 7 | |
| 12 | ? – 1 | -7 | 83E | 43 | 82E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.