Daily Sunspot Evaluation
Observation Sheet Saturday, 15 March 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)
- 13
- Relative number (R)
- 43
- Observer
- HE
- Reading
- all checks consistent
- File
- 19970315.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 6 | 7 | 36W | 211 | 38W | 1 | 12 |
| 2 | AX – 2 | -32 | 34W | 209 | 36W | 0.5 | 13 |
| 3 | CAO – 5 | -5 | 25W | 200 | 29W | 3 | 14 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.