Daily Sunspot Evaluation
Observation Sheet Wednesday, 19 April 1989
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)
- 8
- Number of spots (f)
- 88
- Relative number (R)
- 168
- Observer
- SG0
- Reading
- all checks consistent
- File
- 19890419.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ? – 1 | 16 | 79W | 199 | 81W | - | 187 |
| 2 | HS – 1 | 14 | 21W | 141 | 23W | 1.5 | 188 |
| 3 | FKO – 35 | 10 | 07W | 127 | 09W | 17 | 189 |
| 4 | CAI – 8 | 18 | 39E | 81 | 37E | 7.5 | 190 |
| 5 | ? – 1 | 32 | 78E | 42 | 76E | 5 | 191 |
| 6 | DKI – 24 | -21 | 38W | 158 | 40W | 13.5 | 192 |
| 7 | CAI – 14 | -18 | 40E | 80 | 38E | 12 | 193 |
| 8 | HH – 4 | -23 | 54E | 66 | 52E | 4 | 194 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.