Daily Sunspot Evaluation
Observation Sheet Friday, 27 February 2004
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)
- 19
- Relative number (R)
- 69
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20040227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 7 | 12 | 34W | 163 | 35W | ~10 | 28 |
| 2 | HS – 1 | -24 | 19W | 148 | 20W | 0.5 | 30 |
| 3 | DAC – 6 | -6 | 13W | 142 | 14W | ~9 | 31 |
| 4 | HA – 4 | -18 | 03E | 126 | 02E | 3 | 33 |
| 5 | HA – 1 | -16 | 61E | 68 | 60E | 1.5 | 32 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.