Daily Sunspot Evaluation
Observation Sheet Sunday, 2 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)
- 10
- Number of spots (f)
- 59
- Relative number (R)
- 159
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19890402.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 13 | 76W | 60 | 77W | 2 | 152 |
| 2 | BXI – 6 | 21 | 54W | 38 | 55W | 8.5 | 151 |
| 3 | AR – 1 | 24 | 45W | 29 | 46W | 0.5 | 152 |
| 4 | BRO – 2 | 17 | 08E | 336 | 07E | 4.5 | 154 |
| 5 | AX – 1 | 38 | 38E | 306 | 37E | - | 158 |
| 6 | AX – 1 | -30 | 78W | 62 | 79W | - | 159 |
| 7 | FKC – 44 | -19 | 35E | 309 | 34E | 20 | 160 |
| 8 | AX – 1 | -30 | 46E | 298 | 45E | - | 160 |
| 9 | AX – 1 | -23 | 65E | 279 | 64E | - | 164 |
| 10 | AX – 1 | -22 | 75E | 269 | 74E | - | 165 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.