Daily Sunspot Evaluation
Observation Sheet Thursday, 12 August 2004
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)
- 87
- Relative number (R)
- 127
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 20040812.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 11 | 08E | 75 | 05E | ~1.5 | 148 |
| 2 | HA – 3 | 16 | 43E | 40 | 40E | ~2 | 149 |
| 3 | FKC – 80 | -14 | 00 | 83 | 03W | ~16.5 | 146 |
| 4 | DAO – 3 | -8 | 59E | 24 | 56E | 7 | 150 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.