Daily Sunspot Evaluation
Observation Sheet Monday, 17 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)
- 11
- Number of spots (f)
- 96
- Relative number (R)
- 206
- Observer
- MS
- Reading
- all checks consistent
- File
- 20010917.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 15 | 19W | 52 | 21W | 00.5 | |
| 2 | CAO – 5 | 9 | 13E | 20 | 11E | 4 | |
| 3 | AX – 2 | 14 | 19E | 14 | 17E | - | |
| 4 | BXI – 6 | 12 | 44E | 349 | 42E | 5 | |
| 5 | AX – 1 | 21 | 55E | 338 | 53E | - | |
| 6 | DKO – 5 | 14 | 70E | 323 | 68E | 10 | |
| 7 | HS – 1 | 2 | 83E | 310 | 81E | 2 | |
| 8 | BXI – 10 | -21 | 80W | 113 | 82W | 5 | |
| 9 | FKS – 13 | -30 | 70W | 103 | 72W | 20 | |
| 10 | CBE – 18 | -12 | 67W | 100 | 69W | 10 | |
| 11 | FSC – 34 | -11 | 11E | 22 | 09E | 19 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.