Daily Sunspot Evaluation
Observation Sheet Monday, 26 February 1990
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)
- 15
- Number of spots (f)
- 97
- Relative number (R)
- 247
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19900226.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAO – 5 | 4 | 66W | 14 | 68W | 12 | 83 |
| 2 | BRI – 3 | 17 | 54W | 2 | 56W | 11 | 89 |
| 3 | EKC – 32 | 17 | 03W | 311 | 05W | 13 | 85 |
| 4 | AX – 1 | 24 | 52E | 256 | 50E | - | 96 |
| 5 | BXI – 8 | 12 | 53E | 255 | 51E | 5 | 97 |
| 6 | ? – 1 | 28 | 78E | 230 | 76E | - | 100 |
| 7 | DAO – 4 | -3 | 52W | 0 | 54W | 5 | 88 |
| 8 | HS – 1 | -11 | 37W | 345 | 39W | 2.5 | 77 |
| 9 | BXI – 7 | -38 | 20W | 328 | 22W | 9 | 81 |
| 10 | HS – 1 | -13 | 19W | 327 | 21W | 2 | 82 |
| 11 | EKC – 22 | -17 | 08W | 316 | 10W | 11 | 84 |
| 12 | BXI – 5 | -24 | 05E | 303 | 03E | 5 | 98 |
| 13 | HA – 3 | -9 | 12E | 296 | 10E | 2.5 | 93 |
| 14 | HA – 3 | -18 | 42E | 266 | 40E | 3 | 95 |
| 15 | HS – 1 | -21 | 66E | 242 | 64E | 2.5 | 99 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.