Daily Sunspot Evaluation
Observation Sheet Sunday, 5 April 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)
- 75
- Relative number (R)
- 165
- Observer
- MÖ
- Reading
- all checks consistent
- File
- 19700405.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 10 | 28 | 37E | 69 | |||
| 2 | C – 12 | 11 | 51E | 55 | |||
| 3 | ? – 1 | -1 | 78E | 28 | |||
| 4 | E – 18 | -12 | 53E | 53 | |||
| 5 | E – 20 | -12 | 18E | 88 | |||
| 6 | A – 1 | -13 | 55E | 51 | |||
| 7 | B – 2 | -36 | 55E | 51 | |||
| 8 | H – 10 | 4 | 58W | 164 | |||
| 9 | A – 1 | 5 | 69W | 175 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.