Daily Sunspot Evaluation
Observation Sheet Saturday, 12 February 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)
- 7
- Number of spots (f)
- 20
- Relative number (R)
- 90
- Observer
- MS
- Reading
- all checks consistent
- File
- 20050212.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 6 | 11W | 186 | 11W | - | |
| 2 | CRI – 7 | 13 | 09W | 184 | 09W | 4.5 | |
| 3 | AX – 1 | 19 | 04W | 179 | 04W | - | |
| 4 | HA – 4 | -19 | 25W | 200 | 25W | 2 | |
| 5 | HK – 3 | -8 | 21E | 154 | 21E | ~4 | |
| 6 | HS – 1 | -4 | 38E | 137 | 38E | 2 | |
| 7 | HH – 3 | -8 | 54E | 121 | 54E | 5.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.