Daily Sunspot Evaluation
Observation Sheet Sunday, 19 December 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)
- 63
- Relative number (R)
- 113
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19991219.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKO – 17 | 18 | 58E | 117 | 56E | 17 | |
| 2 | HA – 2 | 10 | 66E | 109 | 64E | 15 | |
| 3 | FKS – 41 | -14 | 00 | 175 | 02W | 19 | |
| 4 | HA – 2 | -18 | 52E | 123 | 50E | 6 | |
| 5 | AF – 1 | -21 | 52E | 123 | 50E |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.