Daily Sunspot Evaluation
Observation Sheet Tuesday, 9 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)
- 11
- Number of spots (f)
- 85
- Relative number (R)
- 195
- Observer
- ıH
- Reading
- all checks consistent
- File
- 20020409.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAC – 7 | 3 | 74W | 298 | 76W | ~11.5 | |
| 2 | FKC – 40 | 19 | 12E | 212 | 10E | 22.5 | |
| 3 | DKO – 7 | 19 | 45E | 179 | 43E | 5.5 | |
| 4 | HA – 1 | 12 | 60E | 164 | 58E | ~1 | |
| 5 | DAO – 4 | 19 | 68E | 156 | 66E | 4 | |
| 6 | DAO – 2 | 14 | 69E | 155 | 67E | 8 | |
| 7 | HA – 2 | -12 | 68W | 292 | 70W | ~1 | |
| 8 | HA – 1 | -2 | 39W | 263 | 41W | ~1 | |
| 9 | EAC – 13 | -29 | 10W | 234 | 12W | 12.5 | |
| 10 | HA – 7 | -16 | 02E | 222 | 00 | 2.5 | |
| 11 | HS – 1 | -11 | 29E | 195 | 27E | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.