Daily Sunspot Evaluation
Observation Sheet Sunday, 25 May 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)
- 80
- Relative number (R)
- 240
- Observer
- AB
- Reading
- all checks consistent
- File
- 19580525.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 14 | 8 | 5E | ||||
| 2 | B – 3 | 21 | 34E | ||||
| 3 | A – 1 | 26 | 60E | ||||
| 4 | T – 1 | 22 | 48E | ||||
| 5 | H – 3 | 10 | 23E | ||||
| 6 | G – 11 | -15 | 59E | ||||
| 7 | A – 1 | -12 | 40E | ||||
| 8 | T – 3 | -15 | 23E | ||||
| 9 | B – 6 | -29 | 28W | ||||
| 10 | D – 10 | -24 | 66W | ||||
| 11 | B – 3 | -18 | 63W | ||||
| 12 | D – 3 | -11 | 26W | ||||
| 13 | ? – 1 | -8 | 80W | ||||
| 14 | H – 14 | 10 | 41W | ||||
| 15 | H – 5 | 23 | 23W | ||||
| 16 | A – 1 | 42 | 56W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.