Daily Sunspot Evaluation
Observation Sheet Wednesday, 11 August 1999
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)
- 39
- Relative number (R)
- 79
- Observer
- HÇ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19990811.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 2 | -30 | 39W | 130 | 42W | 9 | C50-2 |
| 2 | HS – 2 | -13 | 09W | 95 ⚠ | 03W | 2 | H0-2 |
| 3 | EAI – 32 | -19 | 05E | 86 | 02E | 11 | |
| 4 | ? – 3 | -26 | 72E | 19 | 69E | ? |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.