Daily Sunspot Evaluation
Observation Sheet Tuesday, 16 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)
- 28
- Relative number (R)
- 88
- Observer
- MB
- Reading
- all checks consistent
- File
- 19930216.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HA – 3 | 9 | 15W | 29 | 17W | 1 | 42 |
| 2 | HS – 10 | 16 | 19E | 355 | 17E | 3.5 | 41 |
| 3 | HA – 1 | 7 | 43E | 331 | 41E | 1 | 44 |
| 4 | EAC – 8 | -7 | 77W | 91 | 79W | 15 | 33 |
| 5 | HR – 5 | -21 | 55E | 319 | 53E | 3 | 40 |
| 6 | ? – 1 | -12 | 83E | 291 | 81E | - | 43 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.