Daily Sunspot Evaluation
Observation Sheet Saturday, 20 June 1959
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)
- 14
- Number of spots (f)
- 89
- Relative number (R)
- 229
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590620.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 20 | 20E | ||||
| 2 | A – 1 | 26 | 32E | ||||
| 3 | A – 1 | 34 | 45E | ||||
| 4 | C – 5 | 25 | 43E | ||||
| 5 | F – 46 | 10 | 35E | ||||
| 6 | C – 3 | 5 | 23E | ||||
| 7 | A – 2 | 9 | 21E | ||||
| 8 | B – 3 | -17 | 43E | ||||
| 9 | J – 1 | -15 | 21E | ||||
| 10 | A – 1 | -11 | 9E | ||||
| 11 | A – 2 | -3 | 9E | ||||
| 12 | B – 2 | -16 | 20W | ||||
| 13 | C – 4 | 8 | 14W | ||||
| 14 | F – 15 | 20 | 41W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.