Daily Sunspot Evaluation
Observation Sheet Thursday, 28 September 2000
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)
- 77
- Relative number (R)
- 177
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20000928.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKC – 27 | 11 | 53W | 79 | 56W | 12 | |
| 2 | HA – 2 | 15 | 40W | 66 | 43W | 0.5 | |
| 3 | HS – 4 | 12 | 28E | 358 | 25E | 2 | |
| 4 | AX – 3 | 23 | 53E | 333 | 50E | 2 | |
| 5 | CSO – 10 | -6 | 54W | 80 | 57W | 17.5 | |
| 6 | HS – 1 | -13 | 01E | 25 | 02W | 1.5 | |
| 7 | EAC – 15 | -11 | 36E | 350 | 33E | 10.5 | |
| 8 | BXO – 3 | -20 | 42E | 344 | 39E | 3.5 | |
| 9 | EKS – 10 | -9 | 69E | 317 | 66E | 11.5 | |
| 10 | AX – 2 | -20 | 72E | 314 | 69E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.