Daily Sunspot Evaluation
Observation Sheet Tuesday, 13 June 1978
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)
- 25
- Relative number (R)
- 85
- Observer
- GA
- Reading
- counts consistent, some coordinates doubtful
- File
- 19780613.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 17 | 20E | 206 | 17E | ||
| 2 | C – 4 | 26 | 39E | 187 | 36E | ||
| 3 | ? – 1 | 20 | 74E | 152 | 71E | ||
| 4 | A – 1 | 17 | 65E | 161 | 62E | ||
| 5 | B – 4 | -33 | 30E | 186 ⚠ | 27E | ||
| 6 | D – 13 | 16 | 18W | 244 | 21W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.