Daily Sunspot Evaluation
Observation Sheet Thursday, 30 July 1959
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)
- 104
- Relative number (R)
- 234
- Observer
- AK
- Reading
- all checks consistent
- File
- 19590730.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 28 | 2E | ||||
| 2 | C – 11 | 36 | 15E | ||||
| 3 | F – 60 | 12 | 16E | ||||
| 4 | B – 2 | 14 | 32E | ||||
| 5 | J – 1 | 7 | 8E | ||||
| 6 | C – 3 | 8 | 45E | ||||
| 7 | C – 11 | 5 | 57E | ||||
| 8 | C – 6 | -16 | 24W | ||||
| 9 | J – 2 | -6 | 76W | ||||
| 10 | C – 3 | 7 | 35W | ||||
| 11 | J – 1 | 19 | 71W | ||||
| 12 | H – 1 | 25 | 16W | ||||
| 13 | A – 1 | 15 | 7W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.