Daily Sunspot Evaluation
Observation Sheet Friday, 22 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)
- 6
- Number of spots (f)
- 43
- Relative number (R)
- 103
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19880422.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EKF – 15 | 23 | 64W | 283 | 67W | 13 | 71 |
| 2 | HK – 1 | 24 | 43W | 262 | 46W | 3.5 | 74 |
| 3 | BXI – 20 | 25 | 21W | 240 | 24W | 7.5 | 75 |
| 4 | AR – 4 | -14 | 19W | 238 | 22W | 3 | 79 |
| 5 | ? – 1 | -19 | 85E | 134 | 82E | 0.5 | 80 |
| 6 | AX – 2 | -26 | 63E | 156 | 60E | 1 | 81 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.