Daily Sunspot Evaluation
Observation Sheet Friday, 24 February 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)
- 12
- Number of spots (f)
- 165
- Relative number (R)
- 285
- Observer
- HÇ
- Reading
- all checks consistent
- File
- 19890224.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | FKC – 41 | 17 | 26W | 139 | 29W | 16.0 | |
| 2 | AX – 1 | 25 | 12W | 125 | 15W | - | |
| 3 | BXI – 5 | 28 | 04W | 117 | 07W | 3.75 | |
| 4 | AX – 12 | 14 | 02W | 115 | 05W | 2.75 | |
| 5 | BXO – 7 | 37 | 63E | 50 | 60E | 14.0 | |
| 6 | BXI – 18 | 10 | 67E | 46 | 64E | 12.0 | |
| 7 | FKC – 50 | -13 | 56W | 169 | 59W | 15.5 | |
| 8 | AR – 7 | -22 | 35W | 148 | 38W | 3.0 | |
| 9 | DAI – 14 | -10 | 12E | 101 | 09E | 9.0 | |
| 10 | AX – 3 | -20 | 24E | 89 | 21E | 1.0 | |
| 11 | AX – 1 | -22 | 50E | 63 | 47E | - | |
| 12 | BXI – 6 | -21 | 67E | 46 | 64E | 6.0 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.