Daily Sunspot Evaluation
Observation Sheet Sunday, 16 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)
- 9
- Number of spots (f)
- 118
- Relative number (R)
- 208
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20010916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRI – 6 | 21 | 73W | 120 | 76W | 8 | |
| 2 | CAI – 6 | 16 | 08W | 55 | 11W | 7.5 | |
| 3 | CSI – 15 | 9 | 27E | 20 | 24E | 7 | |
| 4 | AX – 1 | 19 | 68E | 339 | 65E | - | |
| 5 | DAO – 2 | 13 | 79E | 328 | 76E | 7 | |
| 6 | CSI – 8 | -21 | 62W | 109 | 65W | 11 | |
| 7 | FKC – 14 | -31 | 55W | 102 | 58W | 18 | |
| 8 | EAC – 23 | -12 | 52W | 99 | 55W | ~11 | |
| 9 | ESI – 43 | -12 | 26E | 21 | 23E | 18 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.