Daily Sunspot Evaluation
Observation Sheet Monday, 12 December 1960
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)
- 35
- Relative number (R)
- 115
- Observer
- MH
- Reading
- all checks consistent
- File
- 19601212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 15 | 22E | ||||
| 2 | J – 3 | 5 | 16E | ||||
| 3 | C – 6 | -11 | 12E | ||||
| 4 | C – 13 | -8 | 3E | ||||
| 5 | J – 3 | -15 | 42W | ||||
| 6 | A – 1 | 30 | 26W | ||||
| 7 | J – 1 | 28 | 19W | ||||
| 8 | A – 1 | 35 | 22W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.