Daily Sunspot Evaluation
Observation Sheet Tuesday, 15 April 1986
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)
- 4
- Relative number (R)
- 24
- Observer
- TS
- Reading
- counts consistent, some coordinates doubtful
- File
- 19860415.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 3 | 1 | 68E | 67 ⚠ | 67E | 3.7 | |
| 2 | HSX – 1 | -8 | 65E | 172 ⚠ | 64E | 15.425 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.