Daily Sunspot Evaluation
Observation Sheet Thursday, 28 April 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)
- 2
- Number of spots (f)
- 20
- Relative number (R)
- 40
- Observer
- TG
- Reading
- all checks consistent
- File
- 20050428.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DKC – 15 | -7 | 41E | 228 | 37E | ~6.5 | |
| 2 | DAC – 5 | -6 | 14E | 255 | 10E | ~4.5 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.