Daily Sunspot Evaluation
Observation Sheet Friday, 3 April 1998
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)
- 4
- Number of spots (f)
- 37
- Relative number (R)
- 77
- Observer
- TA
- Reading
- all checks consistent
- File
- 19980403.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 5 | -25 | 73W | 221 | 76W | 4 | 675A |
| 2 | CRI – 4 | -32 | 58W | 206 | 61W | 4 | 656 |
| 3 | EAI – 19 | -22 | 06E | 142 | 03E | 12 | 63A |
| 4 | BRI – 9 | -23 | 18E | 130 | 15E | 4 | 656 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.