Daily Sunspot Evaluation
Observation Sheet Thursday, 4 October 2001
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)
- 14
- Number of spots (f)
- 78
- Relative number (R)
- 218
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20011004.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 22 | 72W | 241 | 75W | 3 | |
| 2 | HR – 1 | 4 | 69W | 238 | 72W | 1 | |
| 3 | EKC – 16 | 12 | 64W | 233 | 67W | 13.5 | |
| 4 | HS – 1 | 5 | 10E | 159 | 07E | ~1 | |
| 5 | HR – 1 | 3 | 17E | 152 | 14E | 0.5 | |
| 6 | HA – 2 | 22 | 23E | 146 | 20E | 1.5 | |
| 7 | DAC – 9 | -14 | 53W | 222 | 56W | 5.5 | |
| 8 | EAC – 17 | -18 | 31W | 200 | 34W | 13 | |
| 9 | CSI – 9 | -13 | 10W | 179 | 13W | ~6 | |
| 10 | DAI – 6 | -24 | 03W | 172 | 06W | 3.5 | |
| 11 | HR – 1 | -18 | 02W | 171 | 05W | 0.5 | |
| 12 | HA – 1 | -19 | 52E | 117 | 49E | ~1 | |
| 13 | DAO – 3 | -5 | 60E | 109 | 57E | ~9 | |
| 14 | DAO – 9 | -12 | 67E | 102 | 64E | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.