Daily Sunspot Evaluation
Observation Sheet Saturday, 13 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)
- 9
- Number of spots (f)
- 96
- Relative number (R)
- 186
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19890513.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 12 | 27 | 07W | 171 | 10W | 6 | |
| 2 | CKO – 17 | 10 | 28E | 136 | 25E | 11.5 | |
| 3 | BXO – 3 | 17 | 48E | 116 | 45E | 2.5 | |
| 4 | CAO – 7 | 17 | 59E | 105 | 56E | 11 | |
| 5 | ? – 8 | 16 | 76E | 88 | 73E | 9 | |
| 6 | EAO – 31 | -31 | 30W | 194 | 33W | 16 | |
| 7 | CAI – 13 | -20 | 05E | 159 | 02E | 11 | |
| 8 | BXO – 3 | -26 | 10E | 154 | 07E | 5.5 | |
| 9 | HA – 2 | -10 | 43E | 121 | 40E | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.