Daily Sunspot Evaluation
Observation Sheet Sunday, 17 January 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)
- 5
- Number of spots (f)
- 40
- Relative number (R)
- 90
- Observer
- HÇ0
- Reading
- counts consistent, some coordinates doubtful
- File
- 19930117.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 5 | 14 | 45W | 94 | 47W | 4 | 18 |
| 2 | HS – 1 | 14 | 52E | 37 ⚠ | 50E | 2.5 | 17 |
| 3 | DAC – 20 | -9 | 63W | 112 | 65W | 10 | 13 |
| 4 | HR – 1 | -26 | 26E | 23 | 24E | 0.5 | 15 |
| 5 | CAI – 13 | -13 | 31E | 18 | 25E | 6 | 16 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.