Daily Sunspot Evaluation
Observation Sheet Friday, 4 December 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)
- 8
- Number of spots (f)
- 145
- Relative number (R)
- 225
- Observer
- FY
- Reading
- all checks consistent
- File
- 19591204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 2 | 19 | 18E | ||||
| 2 | F – 60 | 10 | 17E | ||||
| 3 | D – 9 | 17 | 56E | ||||
| 4 | J – 1 | 7 | 67E | ||||
| 5 | D – 7 | -14 | 51E | ||||
| 6 | A – 2 | -21 | 44W | ||||
| 7 | E – 63 | 8 | 37W | ||||
| 8 | J – 1 | 21 | 64W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.