Daily Sunspot Evaluation
Observation Sheet Saturday, 4 May 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)
- 10
- Number of spots (f)
- 123
- Relative number (R)
- 223
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680504.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 17 | 19 | 17°E | 341 | |||
| 2 | C – 17 | 19 | 29°E | 329 | |||
| 3 | E – 20 | 20 | 50°E | 308 | |||
| 4 | B – 7 | 8 | 24°E | 334 | |||
| 5 | A – 1 | -3 | 55E | 303 | |||
| 6 | J – 1 | -14 | 40W | 38 | |||
| 7 | A – 1 | 3 | 23W | 21 | |||
| 8 | E – 30 | 17 | 34W | 32 | |||
| 9 | A – 2 | 19 | 13W | 11 | |||
| 10 | B – 27 | 19 | 03W | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.