Daily Sunspot Evaluation
Observation Sheet Wednesday, 26 April 1972
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)
- 8
- Number of spots (f)
- 34
- Relative number (R)
- 114
- Observer
- SK
- Reading
- all checks consistent
- File
- 19720426.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 4 | 18 | 06E | 253 | |||
| 2 | D – 4 | 3 | 25E | 234 | |||
| 3 | A – 1 | -10 | 02W | 261 | |||
| 4 | G – 8 | -15 | 15W | 274 | |||
| 5 | H – 3 | -11 | 60W | 319 | |||
| 6 | A – 3 | 7 | 60W | 319 | |||
| 7 | D – 10 | 7 | 43W | 302 | |||
| 8 | A – 1 | 11 | 32W | 291 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.