Daily Sunspot Evaluation
Observation Sheet Friday, 30 April 1999
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)
- 46
- Relative number (R)
- 96
- Observer
- TÇ
- Reading
- all checks consistent
- File
- 19990430.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 2 | 31 | 26W | 39 | 29W | 4 | |
| 2 | FSC – 28 | 21 | 19W | 32 | 22W | 15.5 | |
| 3 | BXI – 9 | 17 | 18W | 31 | 21W | 5 | Cri-9 |
| 4 | DSO – 5 | 15 | 66E | 307 | 63E | 18 | |
| 5 | ? – 2 | 19 | 77E | 296 | 74E | 13 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.