Daily Sunspot Evaluation
Observation Sheet Tuesday, 18 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)
- 6
- Number of spots (f)
- 44
- Relative number (R)
- 104
- Observer
- AE
- Reading
- all checks consistent
- File
- 19670718.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 9 | 34E | 201 | |||
| 2 | ? – 3 | -22 | 75E | 160 | |||
| 3 | B – 2 | -20 | 27E | 208 | |||
| 4 | E – 29 | -17 | 13W | 248 | |||
| 5 | B – 4 | -19 | 30W | 265 | |||
| 6 | J – 3 | 26 | 61W | 296 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.