Daily Sunspot Evaluation
Observation Sheet Friday, 6 February 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)
- 21
- Relative number (R)
- 101
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700206.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 2 | 18 | 60E | 89 | |||
| 2 | B – 3 | -10 | 32E | 117 | |||
| 3 | ? – 1 | -19 | 83E | 66 | |||
| 4 | H – 6 | -12 | 10E | 139 | |||
| 5 | A – 1 | -10 | 01E | 148 | |||
| 6 | A – 1 | -33 | 18W | 167 | |||
| 7 | A – 2 | -18 | 19W | 168 | |||
| 8 | B – 5 | -11 | 40W | 189 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.