Daily Sunspot Evaluation
Observation Sheet Saturday, 21 June 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)
- 86
- Relative number (R)
- 206
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800621.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 2 | 17 | 32W | 223 | 34W | 15 | |
| 2 | DAC – 22 | 23 | 21W | 212 | 23W | 7 | |
| 3 | AKA – 2 | 26 | 33E | 158 | 31E | 1 | |
| 4 | AXA – 1 | -17 | 31W | 222 | 33W | - | |
| 5 | DAO – 11 | -11 | 06E | 183 | 06E | 8.5 | |
| 6 | AKA – 3 | -17 | 12E | 179 | 10E | 1 | |
| 7 | HAX – 2 | -20 | 21E | 170 | 19E | 2 | |
| 8 | EKC – 30 | -28 | 26E | 165 | 24E | 14.5 | |
| 9 | HSX – 1 | -11 | 37E | 154 | 35E | 1.5 | |
| 10 | HHX – 4 | -13 | 64E | 127 | 62E | 7 | |
| 11 | HHX – 2 | -9 | 73E | 118 | 71E | 6 | |
| 12 | ? – 6 | -21 | 73E | 118 | 71E | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.