Daily Sunspot Evaluation
Observation Sheet Thursday, 16 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)
- 3
- Number of spots (f)
- 13
- Relative number (R)
- 43
- Observer
- TA
- Reading
- all checks consistent
- File
- 19930916.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AX – 2 | 12 | 31W | 125 | 34W | 1.5 | 236 |
| 2 | BXI – 4 | -21 | 15E | 79 | 12E | 2.5 | 235 |
| 3 | BXO – 7 | -12 | 60E | 34 | 57E | 1.5 | 234 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.