Daily Sunspot Evaluation
Observation Sheet Saturday, 1 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)
- 9
- Number of spots (f)
- 78
- Relative number (R)
- 168
- Observer
- HE
- Reading
- all checks consistent
- File
- 19890401.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 13 | 57W | 56 | 60W | 1.5 | |
| 2 | BXI – 7 | 22 | 32W | 31 | 35W | 5.5 | |
| 3 | BXO – 3 | 17 | 25E | 334 | 22E | 4.5 | |
| 4 | BXO – 2 | 38 | 59E | 300 | 56E | 6.5 | |
| 5 | AR – 1 | 12 | 72E | 287 | 69E | - | |
| 6 | CAO – 3 | -26 | 67W | 66 | 70W | 13 | |
| 7 | AX – 1 | -8 | 29E | 330 | 26E | - | |
| 8 | FKI – 57 | -20 | 54E | 305 | 51E | 19 | |
| 9 | BXO – 3 | -29 | 60E | 299 | 57E | 9 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.