Daily Sunspot Evaluation
Observation Sheet Friday, 7 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)
- 8
- Number of spots (f)
- 50
- Relative number (R)
- 130
- Observer
- DK
- Reading
- counts consistent, some coordinates doubtful
- File
- 19670707.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | B – 7 | 25 | 31E | 350 | |||
| 2 | J – 2 | 18 | 32E | 349 | |||
| 3 | B – 6 | -21 | 05E | 16 | |||
| 4 | B – 6 | -20 | 02W | 23 | |||
| 5 | J – 3 | -15 | 15W | 36 | |||
| 6 | C – 21 | -21 | 42W | 63 | |||
| 7 | ? – 1 | 25 | 78W | 103 ⚠ | |||
| 8 | H – 4 | 20 | 32W | 53 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.