Daily Sunspot Evaluation
Observation Sheet Friday, 15 May 1959
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)
- 9
- Number of spots (f)
- 86
- Relative number (R)
- 176
- Observer
- AK
- Reading
- all checks consistent
- File
- 19590515.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 1 | 19 | 10E | ||||
| 2 | A – 1 | 16 | 33E | ||||
| 3 | C – 2 | -7 | 67E | ||||
| 4 | D – 9 | -18 | 56W | ||||
| 5 | J – 1 | -14 | 76W | ||||
| 6 | C – 4 | 10 | 64W | ||||
| 7 | H – 3 | 26 | 42W | ||||
| 8 | D – 10 | 8 | 7W | ||||
| 9 | F – 55 | 16 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.