Daily Sunspot Evaluation
Observation Sheet Monday, 16 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)
- 50
- Relative number (R)
- 130
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 3 | -15 | 80E | 298 | |||
| 2 | D – 16 | -14 | 14E | 4 | |||
| 3 | E – 13 | -21 | 40E | 338 | |||
| 4 | H – 2 | -21 | 48W | 66 | |||
| 5 | E – 9 | -15 | 55W | 73 | |||
| 6 | H – 1 | 16 | 80W | 98 | |||
| 7 | H – 4 | 19 | 69W | 87 | |||
| 8 | A – 2 | 13 | 43W | 61 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.