Daily Sunspot Evaluation
Observation Sheet Monday, 11 August 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)
- 16
- Number of spots (f)
- 223
- Relative number (R)
- 383
- Observer
- SG
- Reading
- all checks consistent
- File
- 19580811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 16 | 5E | ||||
| 2 | B – 4 | 44 | 37E | ||||
| 3 | J – 2 | 15 | 57E | ||||
| 4 | J – 1 | 15 | 67E | ||||
| 5 | A – 3 | 3 | 69E | ||||
| 6 | F – 65 | -14 | 16E | ||||
| 7 | C – 13 | -26 | 13E | ||||
| 8 | E – 48 | -24 | 2W | ||||
| 9 | B – 8 | -6 | 4W | ||||
| 10 | H – 20 | -12 | 27W | ||||
| 11 | D – 13 | -21 | 54W | ||||
| 12 | B – 5 | -13 | 58W | ||||
| 13 | A – 2 | -10 | 69W | ||||
| 14 | ? – 4 | 24 | 83W | ||||
| 15 | E – 29 | 21 | 41W | ||||
| 16 | A – 4 | 41 | 63W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.