Daily Sunspot Evaluation
Observation Sheet Saturday, 23 April 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)
- 5
- Number of spots (f)
- 23
- Relative number (R)
- 73
- Observer
- LT
- Reading
- all checks consistent
- File
- 19660423.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | D – 13 | 19 | 10E | 61 | |||
| 2 | J – 2 | 27 | 39E | 32 | |||
| 3 | H – 1 | 23 | 62E | 9 | |||
| 4 | B – 2 | 22 | 65W | 136 | |||
| 5 | B – 5 | 30 | 35W | 106 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.