Daily Sunspot Evaluation
Observation Sheet Saturday, 27 February 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)
- 4
- Number of spots (f)
- 7
- Relative number (R)
- 47
- Observer
- HM
- Reading
- all checks consistent
- File
- 19880227.jpg
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | Margin no. |
|---|---|---|---|---|---|---|---|
| 1 | BXO – 2 | 30 | 53E | 169 | 52E | 3.5 | 38 |
| 2 | BXO – 2 | 20 | 68E | 154 | 67E | 5 | 39 |
| 3 | BXO – 2 | 17 | 78E | 144 | 77E | 6 | 40 |
| 4 | AXX – 1 | -21 | 35E | 187 | 34E | - | 37 |
Class as written on the sheet (? = group the observer marked as uncertain). ⚠: the coordinates of this row do not agree with each other.