Daily Sunspot Evaluation
Observation Sheet Sunday, 4 April 1993
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)
- 5
- Number of spots (f)
- 30
- Relative number (R)
- 80
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19930404.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 3 | 6 | 46W | 161 | 49W | 3 | 79 |
| 2 | CSO – 6 | -22 | 37W | 152 | 40W | 8 | 84 |
| 3 | HA – 4 | -12 | 25W | 140 | 28W | 2.5 | 81 |
| 4 | HA – 8 | -5 | 07E | 108 | 04E | 5 | 82 |
| 5 | ERS – 9 | -10 | 42E | 73 | 39E | 13 | 86 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.