Daily Sunspot Evaluation
Observation Sheet Sunday, 9 September 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)
- 10
- Number of spots (f)
- 143
- Relative number (R)
- 243
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 20010909.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 5 | 14 | 81W | 220 | 84W | ~9 | |
| 2 | CAO – 11 | 10 | 40W | 179 | 43W | ~7 | |
| 3 | BXI – 10 | 21 | 24E | 115 | 21E | ~8 | |
| 4 | AX – 1 | 11 | 59E | 80 | 56E | - | |
| 5 | ? – 1 | -8 | 78W | 217 | 81W | - | |
| 6 | ? – 3 | -17 | 70W | 209 | 73W | 6 | |
| 7 | EAI – 27 | -18 | 14W | 153 | 17W | 14 | |
| 8 | EAC – 21 | -16 | 13E | 126 | 10E | ~15 | |
| 9 | FKC – 45 | -28 | 31E | 108 | 28E | 26 | |
| 10 | EAI – 19 | -13 | 44E | 95 | 41E | ~12 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.