Daily Sunspot Evaluation
Observation Sheet Sunday, 11 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)
- 10
- Number of spots (f)
- 86
- Relative number (R)
- 186
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580511.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 5 | 13 | 34E | ||||
| 2 | D – 14 | -7 | 35E | ||||
| 3 | E – 34 | -19 | 56E | ||||
| 4 | J – 2 | -14 | 17E | ||||
| 5 | C – 6 | 2 | 65W | ||||
| 6 | J – 1 | 11 | 57W | ||||
| 7 | B – 2 | 13 | 40W | ||||
| 8 | C – 15 | 8 | 23W | ||||
| 9 | H – 6 | 26 | 51W | ||||
| 10 | J – 1 | 14 | 15W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.