Daily Sunspot Evaluation
Observation Sheet Wednesday, 26 September 1973
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)
- 29
- Relative number (R)
- 89
- Observer
- ED
- Reading
- all checks consistent
- File
- 19730926.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | E – 17 | 175 | |||||
| 2 | A – 3 | 185 | |||||
| 3 | J – 1 | 139 | |||||
| 4 | J – 2 | 186 | |||||
| 5 | J – 2 | 176 | |||||
| 6 | B – 4 | 179 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.