Daily Sunspot Evaluation
Observation Sheet Friday, 4 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)
- 8
- Number of spots (f)
- 107
- Relative number (R)
- 187
- Observer
- AT
- Reading
- all checks consistent
- File
- 19681004.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 10 | 14 | 18E | 115 | |||
| 2 | E – 56 | 17 | 40E | 93 | |||
| 3 | D – 12 | 4 | 32E | 101 | |||
| 4 | A – 1 | 3 | 10E | 123 | |||
| 5 | H – 1 | -16 | 47W | 180 | |||
| 6 | ? – 3 | 11 | 85W | 218 | |||
| 7 | H – 2 | 14 | 64W | 197 | |||
| 8 | D – 22 | 26 | 20W | 153 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.