Daily Sunspot Evaluation
Observation Sheet Sunday, 7 April 2002
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)
- 10
- Number of spots (f)
- 65
- Relative number (R)
- 165
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 20020407.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 11 | 76W | 326 | 78W | 5 | 137 |
| 2 | CAO – 5 | 13 | 62W | 312 | 64W | 6 | |
| 3 | EAO – 10 | 2 | 48W | 298 | 50W | ~12 | 148 |
| 4 | FAI – 14 | 19 | 39E | 211 | 37E | 22 | |
| 5 | HS – 1 | 19 | 72E | 178 | 70E | ~2 | |
| 6 | HA – 4 | -12 | 41W | 291 | 43W | ~2 | |
| 7 | CAO – 8 | -2 | 09W | 259 | 11W | ~6 | |
| 8 | BAI – 18 | -29 | 17E | 233 | 15E | ~11 | |
| 9 | HS – 1 | -10 | 57E | 193 | 55E | ~1 | |
| 10 | HA – 2 | -18 | 64E | 186 | 62E | ~4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.