Daily Sunspot Evaluation
Observation Sheet Tuesday, 23 February 1993
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)
- 33
- Relative number (R)
- 93
- Observer
- TÖ0
- Reading
- all checks consistent
- File
- 19930223.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 1 | 15 | 72W | 351 | 72W | 1.5 | 45 |
| 2 | DAI – 12 | 8 | 34W | 313 | 34W | 8 | 48 |
| 3 | ESI – 6 | 12 | 41E | 238 | 41E | 12 | 47 |
| 4 | DSO – 3 | -13 | 12W | 291 | 12W | 6.5 | 43 |
| 5 | EAO – 10 | -17 | 19E | 260 | 19E | 11 | 46 |
| 6 | HA – 1 | -13 | 61E | 218 | 61E | 3 | 50 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.