Daily Sunspot Evaluation
Observation Sheet Monday, 13 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)
- 13
- Number of spots (f)
- 245
- Relative number (R)
- 375
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19890213.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | ESO – 3 | 17 | 67W | 324 | 69W | 13.0 | 64 |
| 2 | FKC – 89 | 31 | 25W | 282 | 27W | 22.0 | 65 |
| 3 | AR – 1 | 16 | 19W | 276 | 21W | - | 66 |
| 4 | AX – 1 | 23 | 15W | 272 | 17W | - | 67 |
| 5 | BRO – 13 | 22 | 08W | 265 | 10W | 5.5 | 68 |
| 6 | DKC – 34 | 16 | 15E | 242 | 13E | 8.0 | 69 |
| 7 | AR – 1 | 29 | 31E | 226 | 29E | 0.5 | 70 |
| 8 | EKO – 14 | 20 | 60E | 197 | 58E | 15.0 | 71 |
| 9 | AX – 1 | -16 | 70W | 327 | 72W | - | 72 |
| 10 | AR – 3 | -37 | 64W | 321 | 66W | 1.0 | 73 |
| 11 | AR – 2 | -30 | 37W | 294 | 39W | 2.0 | 74 |
| 12 | FKC – 81 | -17 | 15E | 242 | 13E | 18.0 | 75 |
| 13 | AX – 2 | -19 | 50E | 207 | 48E | - | 76 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.