Daily Sunspot Evaluation
Observation Sheet Friday, 26 April 1968
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)
- 5
- Number of spots (f)
- 21
- Relative number (R)
- 71
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19680426.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | -16 | 67E | 37 | |||
| 2 | J – 1 | -25 | 35E | 69 | |||
| 3 | C – 5 | 8 | 46W | 150 | |||
| 4 | B – 5 | 14 | 44W | 148 | |||
| 5 | C – 9 | 15 | 34W | 138 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.