Daily Sunspot Evaluation
Observation Sheet Thursday, 15 July 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)
- 7
- Number of spots (f)
- 51
- Relative number (R)
- 121
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20040715.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 7 | 14 | 78W | 171 | 81W | ~12 | 132 |
| 2 | HS – 2 | 16 | 42W | 135 | 45W | ~2 | 136 |
| 3 | HS – 7 | 12 | 15E | 78 | 12E | ~3.5 | 131 |
| 4 | DAO – 6 | -7 | 33W | 126 | 36W | 5 | 126 |
| 5 | HS – 1 | -7 | 29E | 64 | 26E | ~0.5 | 135 |
| 6 | AX – 8 | -14 | 38E | 55 | 35E | 3 | 138 |
| 7 | FKC – 20 | -10 | 51E | 42 | 48E | 18.5 | 139 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.