Daily Sunspot Evaluation
Observation Sheet Sunday, 23 July 1967
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)
- 9
- Number of spots (f)
- 57
- Relative number (R)
- 147
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670723.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | F – 25 | 26 | 67E | 102 | |||
| 2 | ? – 3 | 13 | 82E | 87 | |||
| 3 | C – 18 | -8 | 14E | 155 | |||
| 4 | B – 2 | -20 | 10E | 159 | |||
| 5 | A – 1 | -22 | 2E | 167 | |||
| 6 | C – 3 | -29 | 11W | 180 | |||
| 7 | A – 1 | -24 | 8W | 177 | |||
| 8 | A – 3 | 17 | 47W | 216 | |||
| 9 | A – 1 | 29 | 16W | 185 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.