Daily Sunspot Evaluation
Observation Sheet Tuesday, 28 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)
- 4
- Number of spots (f)
- 22
- Relative number (R)
- 62
- Observer
- TK
- Reading
- all checks consistent
- File
- 19930928.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | CRO – 7 | 0 | 23W | 318 | 26W | 4.5 | 240 |
| 2 | FKI – 10 | 10 | 72E | 223 | 69E | 1.6 | 242 |
| 3 | AX – 2 | 6 | 57E | 238 | 54E | 2.5 | 243 |
| 4 | DSO – 3 | -7 | 48W | 343 | 51W | 2 | 238 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.