Daily Sunspot Evaluation
Observation Sheet Thursday, 13 April 2006
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)
- 9
- Relative number (R)
- 59
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20060413.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | -11 | 66W | 34 | 69W | 1 | |
| 2 | HA – 2 | -8 | 09W | 337 | 12W | 1 | |
| 3 | HA – 1 | -7 | 19E | 309 | 16E | 1 | |
| 4 | DSO – 4 | -3 | 32E | 296 | 29E | 8 | |
| 5 | HS – 1 | -6 | 57E | 271 | 54E | -1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.