Daily Sunspot Evaluation
Observation Sheet Saturday, 23 April 1988
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)
- 9
- Relative number (R)
- 59
- Observer
- FL
- Reading
- counts consistent, some coordinates doubtful
- File
- 19880423.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | DAF – 3 | 25 | 25W | 280 ⚠ | 78W | 4 | 71 |
| 2 | HK – 2 | 24 | 58W | 262 | 61W | 4 | 74 |
| 3 | AX – 1 | 23 | 34W | 239 | 37W | - | 75 |
| 4 | AX – 2 | -23 | 52E | 153 | 49E | 1 | 61 |
| 5 | HA – 1 | -19 | 75E | 130 | 72E | 2.5 | 80 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.