Daily Sunspot Evaluation
Observation Sheet Sunday, 14 September 1958
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)
- 12
- Number of spots (f)
- 143
- Relative number (R)
- 263
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580914.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 33 | 35E | ||||
| 2 | E – 36 | 15 | 40E | ||||
| 3 | F – 24 | -17 | 63E | ||||
| 4 | E – 10 | -32 | 28E | ||||
| 5 | B – 2 | -8 | 14E | ||||
| 6 | E – 33 | -11 | 4E | ||||
| 7 | B – 3 | -12 | 12W | ||||
| 8 | C – 10 | -10 | 30W | ||||
| 9 | ? – 8 | -11 | 75W | ||||
| 10 | B – 5 | 20 | 60W | ||||
| 11 | A – 1 | 18 | 33W | ||||
| 12 | C – 10 | 22 | 19W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.