Daily Sunspot Evaluation
Observation Sheet Tuesday, 28 June 1983
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)
- 38
- Relative number (R)
- 98
- Observer
- HM
- Reading
- all checks consistent
- File
- 19830628.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 1 | 13 | 78W | 125 | 81W | 2 | 164 |
| 2 | DKO – 5 | 17 | 60W | 107 | 63W | 8 | 165 |
| 3 | DAI – 9 | 12 | 30W | 77 | 33W | 6 | 192 |
| 4 | HAX – 3 | -9 | 43E | 4 | 40E | 1.5 | 198 |
| 5 | CKI – 14 | -10 | 54E | 353 | 51E | 5 | 199 |
| 6 | BXO – 6 | -19 | 68E | 339 | 65E | 6 | 183 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.