Daily Sunspot Evaluation
Observation Sheet Wednesday, 30 December 1970
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)
- 34
- Relative number (R)
- 114
- Observer
- FA
- Reading
- all checks consistent
- File
- 19701230.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 1 | 21 | 24°E | 128 | |||
| 2 | J – 2 | 22 | 54°E | 98 | |||
| 3 | J – 1 | 4 | 65°E | 87 | |||
| 4 | D – 16 | -14 | 31°W | 183 | |||
| 5 | A – 1 | -11 | 68°W | 220 | |||
| 6 | J – 2 | 11 | 30°W | 182 | |||
| 7 | G – 9 | 10 | 11°W | 163 | |||
| 8 | H – 2 | 14 | 02°W | 154 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.