Daily Sunspot Evaluation
Observation Sheet Saturday, 15 June 1974
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)
- 10
- Relative number (R)
- 40
- Observer
- ED
- Reading
- all checks consistent
- File
- 19740615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | G – 4 | -16 | 54E | 349 | |||
| 2 | A – 2 | -15 | 18W | 61 | |||
| 3 | G – 4 | 6 | 19W | 62 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.