Daily Sunspot Evaluation
Observation Sheet Sunday, 12 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)
- 6
- Number of spots (f)
- 49
- Relative number (R)
- 109
- Observer
- SM
- Reading
- counts consistent, some coordinates doubtful
- File
- 19680512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 2 | 25 | 6E | 345 | |||
| 2 | D – 16 | 13 | 21E | 330 | |||
| 3 | A – 5 | -13 | 12E | 333 | |||
| 4 | A – 1 | -38 | 8E | 343 | |||
| 5 | C – 11 | 23 | 58W | 309 ⚠ | |||
| 6 | G – 14 | 16 | 38W | 29 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.