Daily Sunspot Evaluation
Observation Sheet Thursday, 30 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)
- 27
- Relative number (R)
- 67
- Observer
- NA
- Reading
- all checks consistent
- File
- 19980430.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 30 | 35W | 185 | 37W | 0.5 | 25 22 |
| 2 | BXO – 5 | 25 | 55E | 95 | 53E | 4 | 50 28 |
| 3 | AX – 1 | -22 | 60E | 90 | 58E | 61 39 | |
| 4 | CKI – 19 | -17 | 12E | 138 | 10E | 12 | 72 75 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.