Daily Sunspot Evaluation
Observation Sheet Thursday, 23 June 1960
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)
- 30
- Relative number (R)
- 90
- Observer
- FY
- Reading
- all checks consistent
- File
- 19600623.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | H – 9 | 20 | 34E | ||||
| 2 | H – 2 | 8 | 77E | ||||
| 3 | B – 4 | 2 | 47E | ||||
| 4 | ? – 1 | -6 | 88E | ||||
| 5 | ? – 1 | -7 | 73E | ||||
| 6 | H – 13 | 12 | 26W |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.