Daily Sunspot Evaluation
Observation Sheet Thursday, 1 April 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)
- 3
- Number of spots (f)
- 4
- Relative number (R)
- 34
- Observer
- HE
- Reading
- all checks consistent
- File
- 20040401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 1 | 13 | 17W | 59 | 19W | ~2 | 52 |
| 2 | HS – 1 | -5 | 19W | 61 | 21W | ~1 | 46 |
| 3 | HA – 2 | -14 | 29E | 13 | 27E | ~3 | 55 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.