Daily Sunspot Evaluation
Observation Sheet Saturday, 4 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)
- 14
- Number of spots (f)
- 67
- Relative number (R)
- 207
- Observer
- MB
- Reading
- all checks consistent
- File
- 19890204.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 1 | 20 | 75W | 91 | 77W | - | 61 |
| 2 | AX – 1 | 37 | 60W | 76 | 62W | - | 62 |
| 3 | BRI – 7 | 23 | 16W | 32 | 18W | 6.0 | 63 |
| 4 | BXI – 5 | 13 | 30E | 346 | 29E | 4.5 | 69 |
| 5 | AX – 1 | 30 | 57E | 319 | 55E | - | 65 |
| 6 | CAO – 7 | 18 | 58E | 318 | 56E | 9.5 | 64 |
| 7 | BXO – 4 | -26 | 62W | 78 | 64W | 5.0 | 67 |
| 8 | CAE – 23 | -23 | 39W | 55 | 41W | 9.0 | 53 |
| 9 | AX – 1 | -10 | 35W | 51 | 37W | - | 70 |
| 10 | BXO – 3 | -6 | 16W | 32 | 18W | 4.0 | 54 |
| 11 | HA – 1 | -22 | 18E | 358 | 16E | 2.0 | 55 |
| 12 | HA – 3 | -26 | 36E | 340 | 34E | 2.5 | 56 |
| 13 | CSI – 7 | -14 | 39E | 337 | 37E | 7.0 | 59 |
| 14 | ? – 3 | -31 | 77E | 299 | 75E | 2.0 | 71 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.