Daily Sunspot Evaluation
Observation Sheet Wednesday, 9 May 1990
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)
- 9
- Number of spots (f)
- 73
- Relative number (R)
- 163
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900509.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 7 | 15 | 66°W | 145 | 69°W | 7° | 192 |
| 2 | AX – 2 | 18 | 19°W | 98 | 22°W | 1° | 197 |
| 3 | CSI – 25 | 17 | 01E | 78 | 02W | 16 | 188 |
| 4 | AR – 1 | 13 | 61E | 18 | 58E | 1 | 195 |
| 5 | ? – 1 | 22 | 80E | 359 | 79E | - | 198 |
| 6 | HS – 2 | -13 | 36W | 115 | 39W | 2 | 185 |
| 7 | DAO – 17 | -13 | 13W | 92 | 16W | 11 | 191 |
| 8 | BXO – 9 | -12 | 02E | 77 | 01W | 7 | 190 |
| 9 | CAI – 9 | -18 | 49E | 30 | 46E | 4 | 193 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.