Daily Sunspot Evaluation
Observation Sheet Tuesday, 13 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)
- 8
- Number of spots (f)
- 75
- Relative number (R)
- 155
- Observer
- TG
- Reading
- all checks consistent
- File
- 20040713.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 19 | 13 | 50W | 170 | 53W | ~8 | 132 |
| 2 | CAO – 9 | 14 | 10W | 130 | 13W | ~6 | 136 |
| 3 | HS – 12 | 9 | 41E | 79 | 38E | ~4 | 131 |
| 4 | DAI – 17 | -8 | 05W | 125 | 08W | ~9 | 126 |
| 5 | HR – 1 | -9 | 55E | 65 | 52E | ~0.5 | 135 |
| 6 | HR – 1 | -12 | 65E | 55 | 62E | ~0.5 | 137 |
| 7 | BXO – 3 | -18 | 70E | 50 | 67E | ~7 | 138 |
| 8 | ? – 13 | -10 | 75E | 45 | 72E | ~11 | 139 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.