Daily Sunspot Evaluation
Observation Sheet Thursday, 26 September 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)
- 122
- Relative number (R)
- 222
- Observer
- AT
- Reading
- all checks consistent
- File
- 19680926.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 14 | 18 | 15°E | 225 | |||
| 2 | C – 15 | 10 | 11°E | 229 | |||
| 3 | H – 18 | 12 | 29°E | 211 | |||
| 4 | D – 11 | 12 | 44°E | 196 | |||
| 5 | J – 1 | -16 | 62°E | 178 | |||
| 6 | A – 1 | -17 | 17°W | 257 | |||
| 7 | J – 1 | 17 | 55°W | 295 | |||
| 8 | D – 8 | 21 | 58°W | 298 | |||
| 9 | E – 35 | 17 | 10°W | 250 | |||
| 10 | C – 18 | 15 | 0° | 240 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.