Daily Sunspot Evaluation
Observation Sheet Sunday, 23 February 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)
- 7
- Number of spots (f)
- 42
- Relative number (R)
- 112
- Observer
- WG
- Reading
- all checks consistent
- File
- 19580223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 30 | 63E | ||||
| 2 | D – 12 | -12 | 4E | ||||
| 3 | J – 1 | -24 | 4W | ||||
| 4 | D – 11 | -21 | 28W | ||||
| 5 | G – 12 | -14 | 18W | ||||
| 6 | A – 1 | -10 | 13W | ||||
| 7 | C – 3 | -5 | 42W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.