Daily Sunspot Evaluation
Observation Sheet Friday, 27 February 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)
- 15
- Number of spots (f)
- 68
- Relative number (R)
- 218
- Observer
- AK
- Reading
- all checks consistent
- File
- 19590227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 8 | 15E | ||||
| 2 | J – 1 | 16 | 67E | ||||
| 3 | A – 1 | 12 | 68E | ||||
| 4 | J – 2 | -2 | 66E | ||||
| 5 | C – 5 | -6 | 34E | ||||
| 6 | C – 3 | -10 | 35E | ||||
| 7 | B – 2 | -19 | 10E | ||||
| 8 | C – 5 | -33 | 16W | ||||
| 9 | A – 1 | -34 | 30W | ||||
| 10 | H – 1 | 10 | 71W | ||||
| 11 | J – 1 | 16 | 80W | ||||
| 12 | E – 9 | 29 | 70W | ||||
| 13 | C – 5 | 17 | 36W | ||||
| 14 | C – 2 | 22 | 40W | ||||
| 15 | E – 28 | 22 | 8W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.