Daily Sunspot Evaluation
Observation Sheet Saturday, 1 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)
- 8
- Number of spots (f)
- 40
- Relative number (R)
- 120
- Observer
- SB
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 26 | 35E | 189 | |||
| 2 | A – 1 | 27 | 63E | 161 | |||
| 3 | J – 2 | 23 | 53E | 169 | |||
| 4 | A – 2 | 17 | 42E | 182 | |||
| 5 | D – 14 | -19 | 9W | 235 | |||
| 6 | ? – 7 | -22 | 70W | 294 | |||
| 7 | ? – 11 | 10 | 62W | 286 | |||
| 8 | J – 2 | 29 | 54W | 271 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.