Daily Sunspot Evaluation
Observation Sheet Saturday, 28 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)
- 11
- Number of spots (f)
- 67
- Relative number (R)
- 177
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19800628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAO – 4 | 13 | 63W | 163 | 66W | 7 | |
| 2 | DJO – 2 | 13 | 09W | 109 | 12W | 6 | |
| 3 | HEX – 12 | 20 | 29E | 71 | 26E | 4.5 | |
| 4 | CSI – 6 | 10 | 66E | 34 | 63E | 6 | |
| 5 | ? – 2 | -21 | 75W | 175 | 78W | 11 | |
| 6 | FKO – 8 | -28 | 70W | 170 | 73W | 23 | |
| 7 | EKE – 11 | -24 | 58W | 158 | 61W | 13 | |
| 8 | HEX – 6 | -13 | 25W | 125 | 28W | 5 | |
| 9 | CSO – 4 | -9 | 19W | 119 | 22W | 4 | |
| 10 | CAI – 11 | -9 | 11E | 89 | 08E | 4 | |
| 11 | HAX – 1 | -17 | 31E | 67 | 28E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.