Daily Sunspot Evaluation
Observation Sheet Thursday, 28 June 1984
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)
- 3
- Number of spots (f)
- 16
- Relative number (R)
- 46
- Observer
- AÖ0
- Reading
- all checks consistent
- File
- 19840628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HSX – 2 | 4 | 51E | 204 | 48E | 3 | M4 |
| 2 | EKO – 11 | -15 | 59W | 314 | 62W | 14 | M5 |
| 3 | HAX – 3 | -13 | 04E | 251 | 01E | 2 | M6 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.