Daily Sunspot Evaluation
Observation Sheet Saturday, 8 April 1967
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)
- 10
- Number of spots (f)
- 89
- Relative number (R)
- 189
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670408.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 20 | 7E | 124 | |||
| 2 | A – 2 | 19 | 10E | 121 | |||
| 3 | D – 10 | 23 | 24E | 107 | |||
| 4 | A – 4 | 11 | 20E | 111 | |||
| 5 | A – 4 | 19 | 41E | 88 | |||
| 6 | ? – 1 | 15 | 85E | 46 | |||
| 7 | C – 16 | -25 | 3E | 158 ⚠ | |||
| 8 | A – 1 | -21 | 5W | 136 | |||
| 9 | D – 40 | -19 | 25W | 156 | |||
| 10 | A – 10 | -20 | 39W | 172 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.