Daily Sunspot Evaluation
Observation Sheet Thursday, 13 January 2005
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)
- 37
- Relative number (R)
- 67
- Observer
- ZFB
- Reading
- all checks consistent
- File
- 20050113.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 16 | 14 | 32E | 178 | 31E | 8 | |
| 2 | HA – 6 | -5 | 08E | 202 | 07E | 2.5 | |
| 3 | DRO – 15 | -7 | 18E | 192 | 17E | 8.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.