Daily Sunspot Evaluation
Observation Sheet Monday, 20 September 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)
- 2
- Number of spots (f)
- 24
- Relative number (R)
- 44
- Observer
- TA
- Reading
- all checks consistent
- File
- 19930920.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CAI – 15 | -12 | 07E | 34 | 04E | 6.5 | 234 |
| 2 | BXI – 9 | -19 | 11E | 30 | 08E | 5.5 | 237 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.