Daily Sunspot Evaluation
Observation Sheet Thursday, 11 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)
- 12
- Number of spots (f)
- 75
- Relative number (R)
- 195
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20011011.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 3 | 4 | 15E | 62 | 12E | 3.5 | |
| 2 | CRI – 11 | 13 | 18E | 59 | 15E | ~5 | |
| 3 | BXO – 6 | 23 | 41E | 36 | 38E | ~4 | |
| 4 | AX – 4 | 9 | 52E | 25 | 49E | ~2 | |
| 5 | ? – 5 | 15 | 76E | 1 | 73E | ~18 | |
| 6 | AX – 2 | -6 | 39W | 116 | 42W | ~1 | |
| 7 | BXO – 6 | -17 | 24W | 101 | 27W | 3.5 | |
| 8 | DAI – 16 | -22 | 05W | 82 | 08W | 6 | |
| 9 | CAI – 8 | -21 | 09E | 68 | 06E | 5.5 | |
| 10 | EAI – 9 | -13 | 50E | 27 | 47E | 10.5 | |
| 11 | HA – 3 | -15 | 62E | 15 | 59E | 2.5 | |
| 12 | AX – 2 | -12 | 76E | 1 | 73E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.