Daily Sunspot Evaluation
Observation Sheet Monday, 29 April 1968
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)
- 5
- Number of spots (f)
- 21
- Relative number (R)
- 71
- Observer
- AT
- Reading
- counts consistent, some coordinates doubtful
- File
- 19680429.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 1 | 23 | 6E | 70 ⚠ | |||
| 2 | C – 11 | 16 | 30E | 100 ⚠ | |||
| 3 | J – 1 | 18 | 52E | 116 ⚠ | |||
| 4 | C – 5 | -16 | 30E | 94 | |||
| 5 | C – 3 | -23 | 3W | 67 ⚠ |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.