Daily Sunspot Evaluation
Observation Sheet Friday, 5 September 1997
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)
- 3
- Number of spots (f)
- 31
- Relative number (R)
- 61
- Observer
- HE
- Reading
- all checks consistent
- File
- 19970905.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 2 | 28 | 76W | 111 | 78W | 16 | 63 |
| 2 | CEI – 12 | 20 | 32E | 3 | 30E | 4 | 21 |
| 3 | DKO – 17 | -27 | 38E | 357 | 36E | 10 | 22 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.