Daily Sunspot Evaluation
Observation Sheet Tuesday, 15 October 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)
- 43
- Relative number (R)
- 93
- Observer
- AT
- Reading
- all checks consistent
- File
- 19681015.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 30 | 20 | 35E | 314 | |||
| 2 | A – 1 | 17 | 59E | 290 | |||
| 3 | A – 3 | 4 | 55E | 294 | |||
| 4 | C – 4 | -20 | 07E | 342 | |||
| 5 | C – 5 | -13 | 20W | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.