Daily Sunspot Evaluation
Observation Sheet Monday, 14 April 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)
- 27
- Relative number (R)
- 147
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580414.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 40 | 46E | ||||
| 2 | B – 3 | 22 | 57E | ||||
| 3 | J – 2 | -5 | 17E | ||||
| 4 | B – 4 | -16 | 20E | ||||
| 5 | A – 2 | -23 | 19W | ||||
| 6 | A – 3 | -11 | 20W | ||||
| 7 | A – 1 | -8 | 12W | ||||
| 8 | H – 1 | 12 | 67W | ||||
| 9 | C – 2 | 16 | 63W | ||||
| 10 | B – 4 | 26 | 56W | ||||
| 11 | B – 3 | 9 | 12W | ||||
| 12 | A – 1 | 13 | 5W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.