Daily Sunspot Evaluation
Observation Sheet Saturday, 26 September 1970
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)
- 73
- Relative number (R)
- 173
- Observer
- SM
- Reading
- all checks consistent
- File
- 19700926.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | C – 17 | 12 | 02E | 323 | |||
| 2 | D – 21 | 22 | 05E | 320 | |||
| 3 | A – 2 | 23 | 57E | 268 | |||
| 4 | A – 4 | 16 | 39E | 286 | |||
| 5 | ? – 3 | 15 | 84E | 241 | |||
| 6 | A – 2 | 13 | 53E | 272 | |||
| 7 | H – 1 | -7 | 43E | 282 | |||
| 8 | B – 4 | -18 | 05E | 320 | |||
| 9 | ? – 4 | 7 | 80W | 45 | |||
| 10 | C – 15 | 21 | 60W | 25 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.