Daily Sunspot Evaluation
Observation Sheet Tuesday, 11 March 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)
- 8
- Number of spots (f)
- 84
- Relative number (R)
- 164
- Observer
- AK
- Reading
- all checks consistent
- File
- 19580311.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 3 | 22 | 6E | ||||
| 2 | F – 24 | 12 | 13E | ||||
| 3 | D – 18 | 14 | 29E | ||||
| 4 | E – 15 | -17 | 52W | ||||
| 5 | A – 2 | -12 | 47W | ||||
| 6 | C – 4 | 24 | 67W | ||||
| 7 | D – 11 | 32 | 51W | ||||
| 8 | B – 7 | 22 | 30W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.