Daily Sunspot Evaluation
Observation Sheet Saturday, 27 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)
- 122
- Relative number (R)
- 242
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580927.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 15 | 9E | ||||
| 2 | D – 15 | 19 | 25E | ||||
| 3 | B – 4 | 29 | 55E | ||||
| 4 | A – 12 | 9 | 47E | ||||
| 5 | B – 2 | -13 | 59E | ||||
| 6 | E – 38 | -9 | 35E | ||||
| 7 | B – 2 | -10 | 20E | ||||
| 8 | B – 12 | -22 | 31E | ||||
| 9 | G – 9 | -18 | 14E | ||||
| 10 | G – 13 | -5 | 6W | ||||
| 11 | A – 1 | -11 | 33W | ||||
| 12 | D – 12 | 31 | 42W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.