Daily Sunspot Evaluation
Observation Sheet Tuesday, 17 August 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)
- 3
- Number of spots (f)
- 10
- Relative number (R)
- 40
- Observer
- HE
- Reading
- all checks consistent
- File
- 19930817.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 7 | -2 | 09W | 139 | 12W | 4.5 | 206 |
| 2 | HS – 2 | -11 | 26E | 104 | 23E | 2 | 210 |
| 3 | ? – 1 | -9 | 85E | 45 | 82E | - | 215 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.