Daily Sunspot Evaluation
Observation Sheet Thursday, 13 October 1983
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)
- 7
- Number of spots (f)
- 26
- Relative number (R)
- 96
- Observer
- HM
- Reading
- all checks consistent
- File
- 19831013.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | EAO – 7 | 6 | 65W | 135 | 65W | 16 | 303 |
| 2 | AXX – 2 | 5 | 45W | 115 | 45W | 308 | |
| 3 | HAX – 5 | 13 | 43W | 113 | 43W | 3 | 309 |
| 4 | DHI – 8 | 21 | 05W | 75 | 05W | 6 | 307 |
| 5 | AXX – 1 | -12 | 04E | 66 | 04E | 313 | |
| 6 | HSX – 1 | -12 | 44E | 26 | 44E | 15 | 310 |
| 7 | DSO – 2 | -6 | 54E | 16 | 54E | 6 | 311 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.