Daily Sunspot Evaluation
Observation Sheet Wednesday, 29 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)
- 7
- Number of spots (f)
- 75
- Relative number (R)
- 145
- Observer
- SK
- Reading
- all checks consistent
- File
- 19700429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 17 | 20 | 14E | 134 | |||
| 2 | B – 4 | 11 | 20E | 128 | |||
| 3 | C – 11 | -7 | 28E | 120 | |||
| 4 | D – 20 | -10 | 41E | 107 | |||
| 5 | J – 1 | -14 | 70E | 78 | |||
| 6 | ? – 1 | -19 | 78E | 70 | |||
| 7 | D – 21 | -14 | 12W | 160 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.