Daily Sunspot Evaluation
Observation Sheet Monday, 20 June 1960
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)
- 7
- Number of spots (f)
- 38
- Relative number (R)
- 108
- Observer
- ET
- Reading
- all checks consistent
- File
- 19600620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 6 | 22 | 7E | ||||
| 2 | C – 8 | 12 | 14E | ||||
| 3 | ? – 3 | 20 | 74E | ||||
| 4 | A – 1 | -14 | 22E | ||||
| 5 | A – 3 | -26 | 26E | ||||
| 6 | D – 9 | -12 | 62WE | ||||
| 7 | C – 8 | 22 | 76W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.