Daily Sunspot Evaluation
Observation Sheet Sunday, 30 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)
- 63
- Relative number (R)
- 143
- Observer
- HE
- Reading
- all checks consistent
- File
- 19890430.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 2 | 34 | 61W | 36 | 64W | 2 | 150 |
| 2 | BXI – 6 | 26 | 17W | 352 | 20W | 4.5 | 194 |
| 3 | AX – 4 | 13 | 02W | 337 | 05W | 1.5 | 198 |
| 4 | AX – 1 | 14 | 62E | 273 | 59E | - | 206 |
| 5 | ? – 2 | 29 | 71E | 264 | 68E | 6 | 287 |
| 6 | CAI – 13 | -20 | 61W | 36 | 64W | 15 | 197 |
| 7 | AR – 3 | -42 | 26W | 1 | 29W | 2.5 | 37 |
| 8 | CKE – 32 | -19 | 19E | 316 | 66E | 17 | 501 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.