Daily Sunspot Evaluation
Observation Sheet Wednesday, 16 July 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)
- 12
- Number of spots (f)
- 54
- Relative number (R)
- 174
- Observer
- MH
- Reading
- all checks consistent
- File
- 19580716.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 2 | 41 | 8E | ||||
| 2 | A – 1 | 20 | 50E | ||||
| 3 | C – 3 | 19 | 63E | ||||
| 4 | E – 20 | 8 | 26E | ||||
| 5 | A – 1 | 4 | 68E | ||||
| 6 | H – 3 | -5 | 35E | ||||
| 7 | C – 3 | -21 | 31E | ||||
| 8 | A – 4 | -14 | 6E | ||||
| 9 | C – 8 | -25 | 9W | ||||
| 10 | H – 7 | -22 | 43W | ||||
| 11 | A – 1 | -13 | 41W | ||||
| 12 | H – 1 | 16 | 16W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.