Daily Sunspot Evaluation
Observation Sheet Thursday, 14 February 2002
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)
- 9
- Number of spots (f)
- 90
- Relative number (R)
- 180
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20020214.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 5 | 8 | 12W | 228 | 15W | ~6 | |
| 2 | AX – 3 | 18 | 09W | 225 | 12W | ~2 | |
| 3 | FKC – 65 | 14 | 10E | 206 | 07E | ~23 | |
| 4 | HS – 1 | 22 | 13E | 203 | 10E | ~25 | |
| 5 | AX – 3 | 21 | 22E | 194 | 19E | 1 | |
| 6 | HA – 1 | -25 | 61W | 277 | 64W | 1 | |
| 7 | EAO – 9 | -12 | 56W | 272 | 59W | 11 | |
| 8 | BXO – 2 | -3 | 39W | 255 | 42W | 4.5 | |
| 9 | HA – 1 | -29 | 34W | 250 | 37W | 1 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.