Daily Sunspot Evaluation
Observation Sheet Friday, 15 July 1966
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)
- 4
- Number of spots (f)
- 13
- Relative number (R)
- 53
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 5 | 26 | 50E | 3 | |||
| 2 | A – 3 | 23 | 39E | 14 | |||
| 3 | B – 4 | 19 | 33E | 20 | |||
| 4 | A – 1 | 19 | 73W | 126 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.