Daily Sunspot Evaluation
Observation Sheet Monday, 10 April 1989
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)
- 45
- Relative number (R)
- 155
- Observer
- HE
- Reading
- all checks consistent
- File
- 19890410.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 16 | 50W | 289 | 53W | 1 | |
| 2 | AX – 2 | 37 | 03E | 236 | 00 | 0.5 | |
| 3 | DKI – 13 | 34 | 09E | 230 | 06E | 7 | |
| 4 | AR – 1 | 19 | 31E | 208 | 28E | 0.5 | |
| 5 | HA – 2 | 22 | 37E | 202 | 34E | 1 | |
| 6 | FKO – 6 | -19 | 69W | 308 | 72W | 19 | |
| 7 | AX – 1 | -11 | 59W | 298 | 62W | - | |
| 8 | BXI – 5 | -24 | 37W | 276 | 40W | 4 | |
| 9 | HA – 5 | -18 | 31W | 270 | 34W | 4 | |
| 10 | CAO – 4 | -18 | 13W | 252 | 16W | 4.5 | |
| 11 | HA – 4 | -16 | 12W | 251 | 15W | 2 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.