Daily Sunspot Evaluation
Observation Sheet Thursday, 15 June 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)
- 15
- Relative number (R)
- 75
- Observer
- LT
- Reading
- all checks consistent
- File
- 19670615.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | A – 3 | 22 | 2°E | 310 | |||
| 2 | A – 1 | 24 | 10°E | 302 | |||
| 3 | ? – 1 | 25 | 83°E | 229 | |||
| 4 | ? – 1 | 19 | 75°E | 237 | |||
| 5 | D – 5 | -20 | 62°E | 250 | |||
| 6 | ? – 4 | -17 | 81°W | 33 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.