Daily Sunspot Evaluation
Observation Sheet Wednesday, 5 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)
- 7
- Number of spots (f)
- 78
- Relative number (R)
- 148
- Observer
- MB
- Reading
- all checks consistent
- File
- 19890405.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 6 | 16 | 22E | 284 | 19E | 3.5 | 171 |
| 2 | ? – 2 | 33 | 74E | 232 | +1E | 4 | 172 |
| 3 | FKC – 52 | -19 | 03W | 309 | 06W | 20.5 | 159 |
| 4 | DAI – 15 | -12 | 12E | 294 | 09E | 7 | 162 |
| 5 | AR – 1 | -12 | 37E | 269 | 34E | - | 163 |
| 6 | HS – 1 | -16 | 56E | 250 | 53E | 2.5 | 161 |
| 7 | AR – 1 | -19 | 68E | 238 | 65E | - | 160 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.