Daily Sunspot Evaluation
Observation Sheet Tuesday, 28 June 1988
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)
- 65
- Relative number (R)
- 125
- Observer
- AÖ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19880628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DHC – 19 | 13 | 59E | 357 ⚠ | 52E | 10 | 133 |
| 2 | HH – 1 | 27 | 60E | 251 ⚠ | 58E | 3 | 132 |
| 3 | DAO – 2 | -24 | 38W | 89 | 40W | 7 | 128 |
| 4 | HA – 3 | -17 | 22E | 29 | 10E | 2 | 129 |
| 5 | PAI – 11 | -20 | 36E | 15 | 34E | 5 | 139 |
| 6 | EKC – 29 | -20 | 48E | 3 | 46E | 14 | 131 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.