Daily Sunspot Evaluation
Observation Sheet Friday, 30 January 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)
- 9
- Number of spots (f)
- 79
- Relative number (R)
- 169
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700130.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 17 | 11 | 14°E | 225 | |||
| 2 | J – 1 | -32 | 68°E | 171 | |||
| 3 | J – 1 | -22 | 48°W | 287 | |||
| 4 | F – 26 | -17 | 55°W | 294 | |||
| 5 | D – 15 | -9 | 21°W | 260 | |||
| 6 | J – 3 | -11 | 61°W | 300 | |||
| 7 | J – 3 | -6 | 34°W | 273 | |||
| 8 | H – 2 | -4 | 26°W | 265 | |||
| 9 | C – 11 | -4 | 18°W | 257 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.