Daily Sunspot Evaluation
Observation Sheet Tuesday, 19 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)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Observer
- TG
- Reading
- counts consistent, some coordinates doubtful
- File
- 20050419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HS – 2 | 2 | 20W | 47 | 23W | 2.5 | |
| 2 | HR – 2 | -8 | 65W | 32 ⚠ | 08W | ~1 | |
| 3 | HA – 3 | -12 | 60E | 327 | 57E | ~3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.