Daily Sunspot Evaluation
Observation Sheet Sunday, 20 March 1988
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)
- 5
- Number of spots (f)
- 27
- Relative number (R)
- 77
- Observer
- HG
- Reading
- all checks consistent
- File
- 19880320.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | HAX – 8 | 29 | 30W | 322 | 30W | 5 | 47 |
| 2 | AXX – 1 | 28 | 30W | 322 | 30W | 55 | |
| 3 | AXX – 2 | 20 | 53E | 239 | 53E | 0.5 | 54 |
| 4 | DAI – 7 | -29 | 60W | 352 | 60W | 9 | 52 |
| 5 | EKI – 9 | -24 | 21W | 313 | 21W | 11.5 | 48 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.