Daily Sunspot Evaluation
Observation Sheet Friday, 12 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)
- 10
- Number of spots (f)
- 61
- Relative number (R)
- 161
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19890512.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CSO – 4 | 11 | 31W | 208 | 34W | 6 | |
| 2 | AX – 4 | 17 | 30W | 207 | 33W | 1 | |
| 3 | HA – 3 | 27 | 05E | 172 | 02E | 1.5 | |
| 4 | AX – 1 | 27 | 32E | 145 | 29E | - | |
| 5 | CKO – 12 | 10 | 40E | 137 | 37E | 6 | |
| 6 | ? – 7 | 17 | 75E | 102 | 72E | 11 | |
| 7 | EAC – 21 | -31 | 19W | 196 | 22W | 11 | |
| 8 | AX – 2 | -18 | 04W | 181 | 07W | 1.5 | |
| 9 | CSI – 6 | -20 | 22E | 155 | 19E | 5 | |
| 10 | HA – 1 | -10 | 56E | 121 | 53E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.