Daily Sunspot Evaluation
Observation Sheet Sunday, 15 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)
- 6
- Number of spots (f)
- 60
- Relative number (R)
- 120
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700215.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 17 | -13 | 28E | 3 | |||
| 2 | E – 9 | -22 | 52E | 339 | |||
| 3 | H – 3 | -21 | 36W | 67 | |||
| 4 | E – 15 | -14 | 41W | 72 | |||
| 5 | H – 2 | 17 | 68W | 99 | |||
| 6 | H – 14 | 19 | 55W | 86 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.