Daily Sunspot Evaluation
Observation Sheet Saturday, 23 September 1978
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)
- 12
- Number of spots (f)
- 109
- Relative number (R)
- 229
- Observer
- GT
- Reading
- all checks consistent
- File
- 19780923.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | J – 7 | 25 | 06E | 307 | 07E | ||
| 2 | C – 10 | 29 | 36E | 277 | 37E | ||
| 3 | A – 1 | -17 | 70E | 243 | 71E | ||
| 4 | A – 4 | -13 | 11E | 302 | 12E | ||
| 5 | G – 8 | -12 | 06E | 307 | 07E | ||
| 6 | A – 4 | -26 | 18W | 331 | 17W | ||
| 7 | H – 8 | -23 | 24W | 337 | 23W | ||
| 8 | G – 4 | -17 | 39W | 352 | 38W | ||
| 9 | D – 17 | 14 | 23W | 336 | 22W | ||
| 10 | H – 2 | 27 | 66W | 19 | 65W | ||
| 11 | F – 43 | 35 | 50W | 3 | 49W | ||
| 12 | J – 1 | 36 | 71W | 24 | 70W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.