Daily Sunspot Evaluation
Observation Sheet Thursday, 23 January 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)
- 16
- Number of spots (f)
- 62
- Relative number (R)
- 222
- Observer
- ET
- Reading
- all checks consistent
- File
- 19580123.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 3 | 29 | 10E | ||||
| 2 | J – 3 | 19 | 60E | ||||
| 3 | J – 2 | -8 | 41E | ||||
| 4 | C – 10 | -17 | 35E | ||||
| 5 | A – 1 | -27 | 54E | ||||
| 6 | J – 1 | -20 | 0 | ||||
| 7 | A – 1 | -10 | 7W | ||||
| 8 | A – 1 | -23 | 32W | ||||
| 9 | E – 16 | -25 | 47W | ||||
| 10 | B – 3 | -12 | 23W | ||||
| 11 | H – 1 | 23 | 35W | ||||
| 12 | A – 1 | 39 | 35W | ||||
| 13 | B – 4 | 31 | 26W | ||||
| 14 | D – 11 | 23 | 17W | ||||
| 15 | J – 2 | 29 | 7W | ||||
| 16 | B – 2 | 20 | 6W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.