Daily Sunspot Evaluation
Observation Sheet Saturday, 27 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)
- 13
- Number of spots (f)
- 66
- Relative number (R)
- 196
- Observer
- HE
- Reading
- all checks consistent
- File
- 20020427.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 9 | 85W | 72 | 88W | ? | |
| 2 | DSO – 9 | 4 | 28W | 15 | 31W | 9 | |
| 3 | DKI – 22 | 11 | 17W | 4 | 20W | 6 | |
| 4 | HR – 9 | 13 | 04W | 351 | 07W | 2 | |
| 5 | HS – 4 | 12 | 24E | 323 | 31E | 4.5 | |
| 6 | HA – 4 | 12 | 35E | 312 | 32E | 3 | |
| 7 | AX – 1 | -16 | 74W | 61 | 77W | - | |
| 8 | BXO – 3 | -4 | 63W | 50 | 66W | 4.5 | |
| 9 | AX – 3 | -15 | 56W | 43 | 59W | 2 | |
| 10 | AX – 1 | -22 | 44W | 31 | 47W | - | |
| 11 | AX – 1 | -16 | 41W | 28 | 44W | - | |
| 12 | CRO – 7 | -18 | 03E | 344 | 00 | 5 | |
| 13 | AX – 1 | -5 | 09E | 338 | 06E | - |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.