Daily Sunspot Evaluation
Observation Sheet Sunday, 21 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)
- 9
- Number of spots (f)
- 94
- Relative number (R)
- 184
- Observer
- AB
- Reading
- all checks consistent
- File
- 19590621.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 25 | 30E | ||||
| 2 | ? – 1 | 20 | 86E | ||||
| 3 | F – 57 | 11 | 21E | ||||
| 4 | C – 5 | 3 | 10E | ||||
| 5 | A – 2 | 8 | 58E | ||||
| 6 | B – 2 | -18 | 31E | ||||
| 7 | C – 3 | -15 | 10E | ||||
| 8 | J – 2 | 10 | 26W | ||||
| 9 | E – 16 | 19 | 52W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.