Daily Sunspot Evaluation
Observation Sheet Saturday, 17 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)
- 55
- Relative number (R)
- 125
- Observer
- TG
- Reading
- all checks consistent
- File
- 20040717.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 5 | 12 | 13W | 79 | 15W | 25 | 131 |
| 2 | ? – 6 | 7 | 78E | 348 | 76E | ? | 141 |
| 3 | HS – 1 | -7 | 64W | 130 | 66W | 2 | 126 |
| 4 | AX – 4 | -11 | 09E | 57 | 07E | 2 | 140 |
| 5 | BXO – 4 | -15 | 14E | 52 | 12E | 6 | 138 |
| 6 | EKI – 33 | -10 | 20E | 46 | 18E | 13 | 139 |
| 7 | ? – 2 | -11 | 78E | 348 | 76E | ? | 142 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.