Daily Sunspot Evaluation
Observation Sheet Monday, 16 April 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)
- 6
- Number of spots (f)
- 14
- Relative number (R)
- 74
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 20010416.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 2 | 25 | 76W | 346 | 79W | ~15 | |
| 2 | HS – 1 | 9 | 46E | 224 | 43E | 2 | |
| 3 | AX – 1 | -9 | 62W | 332 | 65W | 0.5 | |
| 4 | AX – 1 | -14 | 33W | 303 | 36W | 0.5 | |
| 5 | CRO – 4 | -18 | 24W | 294 | 27W | 6 | |
| 6 | DXO – 5 | -10 | 18W | 288 | 21W | 4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.