Daily Sunspot Evaluation
Observation Sheet Thursday, 24 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)
- 13
- Number of spots (f)
- 130
- Relative number (R)
- 260
- Observer
- FY
- Reading
- all checks consistent
- File
- 19580724.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 6 | 24 | 32E | ||||
| 2 | C – 12 | 15 | 21E | ||||
| 3 | J – 2 | 16 | 35E | ||||
| 4 | B – 2 | 4 | 32E | ||||
| 5 | J – 1 | -4 | 21E | ||||
| 6 | F – 79 | -17 | 35E | ||||
| 7 | H – 5 | -18 | 17E | ||||
| 8 | J – 4 | -14 | 15W | ||||
| 9 | C – 6 | -12 | 25W | ||||
| 10 | J – 1 | -4 | 74W | ||||
| 11 | ? – 5 | 8 | 80W | ||||
| 12 | A – 1 | 18 | 42W | ||||
| 13 | C – 6 | 26 | 41W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.