Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 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)
- 14
- Number of spots (f)
- 134
- Relative number (R)
- 274
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 4 | 15 | 4E | ||||
| 2 | D – 39 | 16 | 16E | ||||
| 3 | B – 3 | 19 | 28E | ||||
| 4 | B – 7 | 23 | 51E | ||||
| 5 | F – 32 | -18 | 43E | ||||
| 6 | E – 12 | -15 | 24E | ||||
| 7 | H – 5 | -32 | 3E | ||||
| 8 | J – 1 | -30 | 5W | ||||
| 9 | B – 2 | -8 | 16W | ||||
| 10 | C – 6 | -22 | 38W | ||||
| 11 | C – 13 | -11 | 25W | ||||
| 12 | B – 3 | -9 | 60W | ||||
| 13 | A – 1 | 21 | 49W | ||||
| 14 | B – 6 | 36 | 52W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.