Daily Sunspot Evaluation
Observation Sheet Sunday, 18 October 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)
- 11
- Number of spots (f)
- 40
- Relative number (R)
- 150
- Observer
- KA
- Reading
- all checks consistent
- File
- 19591018.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 3 | 7 | 41E | ||||
| 2 | J – 3 | 3 | 56E | ||||
| 3 | H – 2 | 3 | 57E | ||||
| 4 | H – 3 | 1 | 42E | ||||
| 5 | B – 2 | 0 | 34E | ||||
| 6 | C – 6 | -7 | 15E | ||||
| 7 | A – 2 | -16 | 14W | ||||
| 8 | B – 4 | -9 | 26W | ||||
| 9 | D – 5 | -13 | 38W | ||||
| 10 | H – 3 | -6 | 32W | ||||
| 11 | H – 7 | 7 | 10W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.