Daily Sunspot Evaluation
Observation Sheet Wednesday, 10 May 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)
- 11
- Number of spots (f)
- 144
- Relative number (R)
- 254
- Observer
- MB
- Reading
- all checks consistent
- File
- 19890510.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 8 | 29 | 52W | 256 | 55W | 12.5 | 203 |
| 2 | BRI – 21 | 17 | 05W | 209 | 08W | 6 | 207 |
| 3 | BRI – 21 | 10 | 04W | 208 | 07W | 9 | 207 |
| 4 | CAI – 11 | 27 | 35E | 169 | 32E | 8 | 206 |
| 5 | HK – 8 | 8 | 66E | 138 | 63E | 7.5 | 206 |
| 6 | DAO – 3 | -22 | 81W | 285 | 84W | 9 | 205 |
| 7 | AX – 3 | -21 | 29W | 233 | 32W | 2 | 205 |
| 8 | CKI – 56 | -31 | 09E | 195 | 06E | 15.5 | 205 |
| 9 | HA – 9 | -21 | 48E | 156 | 45E | 5 | 205 |
| 10 | AX – 3 | -26 | 51E | 153 | 48E | 3.5 | 205 |
| 11 | ? – 1 | -10 | 82E | 122 | 79E | 2 | 205 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.