Daily Sunspot Evaluation
Observation Sheet Thursday, 16 October 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)
- 14
- Number of spots (f)
- 140
- Relative number (R)
- 280
- Observer
- KA
- Reading
- all checks consistent
- File
- 19581016.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 10 | 25 | 12E | ||||
| 2 | ? – 8 | 21 | 22E | ||||
| 3 | B – 4 | 13 | 18E | ||||
| 4 | E – 32 | -3 | 53E | ||||
| 5 | ? – 2 | -9 | 19E | ||||
| 6 | B – 3 | -3 | 72E | ||||
| 7 | C – 6 | -20 | 11E | ||||
| 8 | D – 32 | -28 | 15E | ||||
| 9 | D – 11 | -75 | 0 | ||||
| 10 | D – 12 | -48 | 17W | ||||
| 11 | B – 2 | -10 | 32W | ||||
| 12 | D – 12 | -13 | 45W | ||||
| 13 | B – 3 | 25 | 33W | ||||
| 14 | B – 3 | 34 | 43W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.