Daily Sunspot Evaluation
Observation Sheet Tuesday, 20 January 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)
- 14
- Number of spots (f)
- 118
- Relative number (R)
- 258
- Observer
- MH
- Reading
- all checks consistent
- File
- 19590120.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 4 | 12 | 5E | ||||
| 2 | A – 4 | 9 | 11E | ||||
| 3 | F – 39 | 18 | 18E | ||||
| 4 | A – 2 | 16 | 27E | ||||
| 5 | ? – 1 | 36 | 68E | ||||
| 6 | H – 7 | 19 | 35E | ||||
| 7 | ? – 1 | 22 | 80E | ||||
| 8 | F – 31 | 9 | 35E | ||||
| 9 | F – 7 | 12 | 69EE | ||||
| 10 | B – 4 | -6 | 73E | ||||
| 11 | C – 5 | -11 | 42E | ||||
| 12 | J – 3 | -10 | 26E | ||||
| 13 | B – 4 | -4 | 60W | ||||
| 14 | B – 6 | 20 | 60W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.