Daily Sunspot Evaluation
Observation Sheet Friday, 15 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)
- 5
- Number of spots (f)
- 63
- Relative number (R)
- 113
- Observer
- MB
- Reading
- all checks consistent
- File
- 20000915.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DRO – 8 | 6 | 07E | 188 | 06E | ~5 | |
| 2 | DKC – 36 | 15 | 08E | 187 | 07E | ~8.5 | |
| 3 | CRO – 3 | -34 | 66W | 261 | 67W | ~8 | |
| 4 | CAO – 4 | -28 | 59W | 254 | 60W | ~8 | |
| 5 | DAI – 12 | -11 | 72E | 123 | 71E | ~10 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.