Daily Sunspot Evaluation
Observation Sheet Saturday, 15 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)
- 7
- Number of spots (f)
- 50
- Relative number (R)
- 120
- Observer
- SB
- Reading
- all checks consistent
- File
- 19670715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 3 | 78E | 197 | |||
| 2 | J – 1 | -18 | 63E | 212 | -H2 | ||
| 3 | M – 1 | -21 | 71E | 204 | |||
| 4 | D – 30 | -20 | 27E | 248 | |||
| 5 | J – 3 | -14 | 4W | 279 | |||
| 6 | ? – 3 | 24 | 80W | 355 | |||
| 7 | B – 10 | 24 | 23W | 298 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.