Daily Sunspot Evaluation
Observation Sheet Saturday, 16 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)
- 6
- Number of spots (f)
- 43
- Relative number (R)
- 103
- Observer
- SB0
- Reading
- all checks consistent
- File
- 20020216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EHO – 18 | 19 | 16W | 206 | 19W | 13 | |
| 2 | DAO – 8 | 9 | 07W | 197 | 10W | 3.5 | |
| 3 | HS – 1 | 23 | 12W | 202 | 15W | ~3 | |
| 4 | HS – 1 | -7 | 55E | 135 | 52E | ~1 | |
| 5 | DAC – 13 | -20 | 56E | 134 | 53E | ~18.5 | 85 |
| 6 | DAO – 2 | -5 | 65E | 125 | 62E | ~4 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.