Daily Sunspot Evaluation
Observation Sheet Thursday, 2 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)
- 11
- Number of spots (f)
- 87
- Relative number (R)
- 197
- Observer
- YK
- Reading
- all checks consistent
- File
- 19890202.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AR – 1 | 21 | 77W | 119 | 79W | 1.0 | 55 |
| 2 | AX – 1 | 8 | 55W | 97 | 57W | - | 56 |
| 3 | AX – 3 | 24 | 39E | 3 | 37E | 2.0 | 56 |
| 4 | CAO – 10 | -19 | 73W | 115 | 75W | 8.0 | 56 |
| 5 | CSI – 6 | -19 | 57W | 98 | 59W | 5.25 | 56 |
| 6 | ESC – 52 | -23 | 13W | 55 | 15W | 12.0 | 57 |
| 7 | BXO – 8 | -6 | 12E | 30 | 10E | 4.0 | 57 |
| 8 | HS – 1 | -22 | 45E | 357 | 43E | 2.0 | 58 |
| 9 | AX – 3 | -18 | 57E | 345 | 55E | 1.0 | 58 |
| 10 | HS – 1 | -27 | 64E | 338 | 62E | 2.0 | 58 |
| 11 | HS – 1 | -15 | 65E | 337 | 63E | 1.5 | 58 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.