Daily Sunspot Evaluation
Observation Sheet Saturday, 18 May 1985
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)
- 12
- Relative number (R)
- 52
- Observer
- TS
- Reading
- all checks consistent
- File
- 19850518.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | AXX – 1 | 105 | 64E | 234 | 61E | 7 | |
| 2 | CKI – 8 | 108 | 66E | 234 | 63E | 7 | |
| 3 | HAX – 1 | -13 | 61W | 1 | 64W | 4 | |
| 4 | HSX – 2 | -8 | 41E | 259 | 48E | 3 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.